Developmental stages – Embryology

February 27, 2019 medical

The embryonic time comprises 56 days, i.e., 8 weeks from the moment of fertilization. This time span is divided into 23 Carnegie stages and the stage classification is based solely on morphologic features. Carnegie stages are thus neither directly dependent on the chronological age nor on the size of the embryo. This can be illustrated by two examples: The closure of the rostral neuropore occurs by definition in stage 11 and that of the caudal neuropore in stage 12. Further, between the 25th and 32nd days of the pregnancy, the stages are determined according to the number of the somites 9-13 that have been engendered. The individual stages thus differ in how long they last .During the embryonic period most of the organ systems are established and this with an enormous rapidity. Cell divisions, movement and differentiation are the basic processes taking place during this phase. It is thus hardly surprising that this pregnancy phase is very vulnerable and that deformities are produced most often during this time. The type of deformity depends on the embryonic developmental stage.

Fig. 1Segment A represents the embryonic period in which the embryo is especially sensitive with respect to deformities. Within the first eight weeks, the incidence of deformities (blue curve), that lead to miscarriages, decreases from more than 10% to 1% during the fetal period (B). The frequency of neural tube defects decreases from 2.5% to 0.1% (green curve) by the end of the embryonic period. (2)

According to estimates, over 90% of the 4500 designated structures of the adult body are already established - and can be distinguished - during the embryonic period (1). During the fetal period the organs that formed during the embryonic period grow and differentiate (organogenesis).

Figure 2 shows the various temporal phases during a pregnancy. A rough classification is made by assigning trimesters (trimenon). The LMP (Last Menstruation Period) is not the real beginning of the pregnancy but serves as a point of reference for determining the date of ovulation and thus the moment of fertilization. Normally this occurs 14 days after the beginning of menstruation, but can vary a lot temporally. From the time of the last period, one estimates 40 weeks after the last menstruation in order to determine the approximate date of birth (the second and third grid marks represent the lunar month [of 28 days] or 4 weeks). On average, though, the duration of an actual pregnancy amounts to 266 days or 38 weeks (fourth grid). The embryonic period (A) lasts 8 weeks and the fetal period (B) from the 9th week to the birth.

Fig. 2The schematic diagram shows the various time periods during the entire pregnancy. LMP = Last Menstruation Period. The embryonic period (A) lasts 8 weeks and the fetal period (B) from the 9th week to the birth, i.e., 30 weeks.

In obstetrics the pregnancy weeks (PW) are normally reckoned from the date of the Last Menstrual Period (LMP). This is a point in time that many women can easily remember. Computed this way, the pregnancy lasts 40 weeks and the embryonic period - accordingly - 10 weeks. Caution is advisable, though, when wishing to calculate the moment of ovulation - and thus fertilization, closely connected with it - because the moment of ovulation can vary and depends on many factors (conditioned by the environment and psychological aspects). In embryology the temporal indices (i.e., the PW), therefore, always refer to the moment of fertilization even though in practical midwifery the time following the LMP is still used for computations.

After the 8th week, the fetus takes on typical human features, even though at the end of the first trimenon, the head is still relatively large in appearance. The eyes shift to the front and the ears and nasal saddle are formed. The eyelids are also clearly recognizable now. On the body, fine lanugo hairs are formed, which at the time of birth are replaced by terminal hairs. The physiologic umbilical hernia that arises in the embryonic period 15-20 has mostly disappeared. In the second trimenon the mother feels the first movements of the child. In the last trimenon the subcutaneous fatty tissue is formed and stretches the still wrinkled skin of the fetus. The skin becomes covered more and more with vernix caseosa. This is a whitish, greasy substance und consists of flaked off epithelial cells and sebaceous gland secretions. In neonatology this vernix caseosa is an important criterion for judging the maturity of the child. If the birth occurs post-term, it disappears again.

Fig. 3 - Fetus at 8 weeks

Legend

See more here:
Developmental stages - Embryology

Neuroscience

United Neuroscience – Official Site

February 27, 2019 student

We are pioneering a new class of medicine we call endobody vaccines that are fully synthetic and train the body to safely and efficiently treat and prevent neurological disease.We are not afraid to be brave and tackle the seemingly impossible. We are committed to transforming the lives of all patients and families affected by Alzheimers, Parkinsons, CTE and other neurological diseases.We envision a world where neurodegenerative diseases are prophylactically eradicated.

Read more from the original source:
United Neuroscience - Official Site

Neuroscience

Neuroscience St. Olaf College

February 24, 2019 medical

The brain is a monstrous, beautiful mess. Its billions of nerve cells called neurons lie in a tangled web that displays cognitive powers far exceeding any of the silicon machines we have built to mimic it. William F. Allman

Neuroscience is a multidisciplinary program that provides students access to the field by linking curricula, faculty, and students in a contract concentration that requires foundations in at least two natural sciences and stretches to connect with courses in the arts, humanities, and social sciences. It provides students with a broad introductory exposure to the field of neuroscience by requiring students to integrate material from several disciplines to answer questions about the brain, behavior, and consciousness.

Students interested in the neuroscience program must consult with the director of the neuroscience concentration near the end of sophomore year todevelop acontract.

The rest is here:
Neuroscience St. Olaf College

Neuroscience

Neuroscience Programs: Degrees and Majors | Loras College

February 24, 2019 medical

L.NEU-145: Introductory Neuroscience

This course will introduce students to the fundamental topics and concepts that are critical to understanding the biological and psychological components of neuroscience. Topics to be covered include the biochemistry of action potentials, the functioning of ion channels, a brief overview of systems neuroscience (vision, audition, etc.), neurotransmitters and peripheral endocrine systems, learning and memory, the effects of neurotransmitters on behavior, the biology underlying several psychiatric disorders, and basic neuroanatomy. Prerequisites: L.BIO-1 15 or L.PSY-101. 3 credits.

L.NEU-211: Techniques in Neuroscience

This course will introduce students to techniques relevant to the field of neuroscience, both in terms of the theory that describes the techniques and in terms of practicing the techniques with biological samples. Students will read and discuss primary literature sources from work with both human and non-human models. Extensive laboratory work will teach students laboratory techniques that may include sterile technique, radioimmunoassay, and enzyme immunoassay. Part of the term may be spent at a University. 3 credits. Prerequisite: L.NEU-145. Instructor permission required. January term.

L.NEU-281: Exploring the Brain through TBI

It is difficult to fully understand how the brain functions under completely normal working conditions. One technique used to investigate brain functioning through clinical cases where there has been trauma in a specified region of the brain. Thus, in people with traumatic brain injuries (TBI) neuroscientists can locate the region of trauma and any change in functioning of the individual. This course is designed to explore the brain through various historical cases and provide a deeper understanding of neuro-functioning from resulting deficits in dissociated brain regions. Clinical cases will be provided as we travel from the frontal lobe to the temporal lobe, parietal lobe, occipital lobe and beyond. Prerequisite: L.NEU-145 or L.BIO-345. 3 credits.

L.NEU-291: Functional Neuroanatomy

We will study the topography, functional distribution of nerve cell bodies, and ascending and descending tracts in the spinal cord. Brainstem organization and functional components will be covered, to include cranial nerve nuclei, ascending/descending pathways, structure and information flow in the cerebellar and vestibular systems. Once we have identified all of the functional units of the nervous system, we will continue with how these various pieces and parts work together: motor and sensory systems, cortical versus cerebellar systems, and their functional integration. Prerequisites: L.NEU-145 or L.BIO-115. Restriction: Not open to first year students. 3 credits. Spring semester every two years.

L.NEU-301: Neuropsychiatric Diseases

This course will explore how translational research applies neuroscience knowledge to inform, prevent, treat, and cure brain diseases. Some topics will include the role of the blood brain barrier in preventing disease, the role of both central and peripheral cytokines in the manifestation of psychiatric disorders, how genetic and environmental factors influence susceptibility to psychiatric conditions, and several psychiatric conditions including Parkinsons, Huntingtons, and Alzheimers Diseases, anxious and depressive disorders, and multiple sclerosis. Prerequisites: L.NEU-145 and L.BIO-115. 3 credits.

L.NEU-311: Hormones and Behavior

This course will introduce students to several topics within the field of neuroendocrinology. Topics to be discussed will include the blood brain barrier, synthesis and release of neurotransmitters relevant to behavior, psychosomatic interactions, and the effects of various monoamine, peptide, and steroid hormones on sexual, reproductive, affiliative, aggressive, parental, and reward-seeking behaviors. In addition to readings from the text, students will read and discuss primary literature sources from work with both human and non-human models. Laboratory work will teach students several research skills and laboratory techniques including study design, behavioral observation and scoring, blood sampling, processing and storage, and data set management. Prerequisite: L.NEU145. 3 credits.

L.NEU-390: Research Experience

This experiential class will require students to either 1) propose a novel neuroscience research study or 2) conduct neuroscience research and write up a report of their findings. Students will meet weekly with the course instructor and students may take this course up to 3 (three) times (with 1 credit given each semester). This course will give students a clear understanding of the scientific method and skills needed to conduct research in the field of neuroscience from conception to implementation to presentation. Prerequisite: L.NEU-145. Open to declared Neuroscience majors only. Instructor permission required. 1 credit.

L.NEU-490: Junior Seminar I

This course will serve as the first semester of a capstone series for all students completing a major in Neuroscience. The course will meet once per week, and majors will enroll in the course during the fall semester of their Junior year at Loras College (exceptions (e.g. for study abroad programs, etc.) will be made at the discretion of the Neuroscience faculty). Restricted to Neuroscience majors only. Prerequisite: L.NEU-145. 1 credit.

L.NEU-491: Senior Seminar II

This course will serve as the second semester of a capstone series for all students completing a major in neuroscience. The course meetings will occur once per week, and majors will enroll in the course during the spring semester of their senior year at Loras College (exceptions (e.g. for study abroad programs, etc.) will be made at the discretion of the neuroscience faculty). Restricted to senior neuroscience majors only. Prerequisite: L.NEU-145. 1 credit.

RELATED COURSES: Biology, Chemistry, Criminal Justice, Psychology, Social Work

Continue reading here:
Neuroscience Programs: Degrees and Majors | Loras College

Human Behavior

human behavior | Definition, Theories, & Development …

February 23, 2019 medical

Conception occurs when the sperm from the male penetrates the cell wall of an egg from the female. Human development during the 38 weeks from conception to birth is divided into three phases. The first, the germinal period, lasts from the moment of conception until the time the fertilized egg is implanted in the wall of the uterus, a process that typically takes 10 to 14 days. A second phase, lasting from the second to the eighth week after conception, is called the embryonic period and is characterized by differentiation of the major organs. The last phase, from the eighth week until delivery, is called the fetal period and is characterized by dramatic growth in the size of the organism.

Prenatal development is extremely rapid; by the 18th day the embryo has already taken some shape and has established a longitudinal axis. By the ninth week the embryo is about 2.5 centimetres (one inch) long; face, mouth, eyes, and ears have begun to take on well-defined form, and arms, legs, hands, feet, and even fingers and toes have appeared. The sex organs, along with muscle and cartilage, also have begun to form. The internal organs have a definite shape and assume some primitive function. The fetal period (from about the second month until birth) is characterized by increased growth of the organism and by the gradual assumption of physical functions. By the 20th week the mother can often feel the movements of the fetus, which is now about 20 centimetres long. By the 32nd week the normal fetus is capable of breathing, sucking, and swallowing, and by the 36th week it can show a response to light and sound waves. The head of the fetus is unusually large in relation to other parts of its body because its brain develops more rapidly than do other organs. The seventh month is generally regarded as the earliest age at which a newborn can survive without medical assistance.

By definition, infancy is the period of life between birth and the acquisition of language approximately one to two years later. The average newborn infant weighs 3.4 kilograms (7.5 pounds) and is about 51 centimetres long; in general, boys are slightly larger and heavier than girls. (The period of the newborn covers the first five to seven days, which the infant normally spends recovering from the stresses of delivery.) During their first month, infants sleep for about 1618 hours a day, with five or six sleep periods alternating with a like number of shorter episodes of wakefulness. The total amount of time spent sleeping decreases dramatically, however, to 912 hours a day by age two years, and, with the cessation of nocturnal feedings and morning and afternoon naps, sleep becomes concentrated in one long nocturnal period. Newborns spend as much time in active sleep (during which rapid eye movements occur) as in quiet sleep, but by the third month they spend twice as much time in quiet as in active sleep, and this trend continues (at a much slower rate) into adulthood.

At birth the infant displays a set of inherited reflexes, some of which serve his very survival. An infant only two hours old typically will follow a moving light with his eyes and will blink or close them at the sudden appearance of a bright light or at a sharp, sudden sound nearby. The newborn infant will suck a nipple or almost any other object (e.g., a finger) inserted into his mouth or touching his lips. He will also turn his head toward a touch on the corner of his mouth or on his cheek; this reflex helps him contact the nipple so he can nurse. He will grasp a finger or other object that is placed in his palm. Reflexes that involve sucking and turning toward stimuli are intended to maintain sustenance, while those involving eye-closing or muscle withdrawal are intended to ward off danger. Some reflexes involving the limbs or digits vanish after four months of age; one example is the Babinski reflex, in which the infant bends his big toe upward and spreads his small toes when the outer edge of the sole of his foot is stroked.

The newborn baby can turn his head and eyes toward and away from visual and auditory stimuli, signaling interest and alarm, respectively. Smiling during infancy changes its meaning over the first year. The smiles that newborns display during their first weeks constitute what is called reflex smiling and usually occur without reference to any external source or stimulus, including other people. By two months, however, infants smile most readily in response to the sound of human voices, and by the third or fourth month they smile easily at the sight of a human face, especially one talking to or smiling at the infant. This social smiling, as it is called, marks the beginning of the infants emotional responses to other people.

Research shows the achievement of extraordinary perceptual sophistication over the first months of life. The fetus is already sensitive to stimulation of its skin, especially in the area around the mouth, by the eighth week of intrauterine development. Judging from their facial expressions when different substances are placed on their tongues, newborn infants apparently discriminate between bitter, salty, or sweet tastes; they have an innate preference for sweet tastes and even prefer a sucrose solution to milk. Newborns can also discriminate between different odours or smells; six-day-old infants can tell the smell of their mothers breast from that of another mother.

Much more is known, however, about infants ability to see and hear than about their senses of touch, smell, or taste. During the first half-year of life outside the womb, there is rapid development of visual acuity, from 20/800 vision (in Snellen notation) among two-week-olds to 20/70 vision in five-month-olds to 20/20 vision at five years. Even newborn infants are sensitive to visual stimulation and attend selectively to certain visual patterns; they will track moving stimuli with their gaze and can discriminate among lights that vary in brightness. They show a noticeable predilection for the sight of the human face, and by the first or second month they are able to discriminate between different faces by attending to the internal featureseyes, nose, and mouth. By the third month, infants can identify their mothers by sight and can discriminate between some facial expressions. By the seventh month, they can recognize a particular person from different perspectivesfor example, a full face versus a profile of that face. Infants can identify the same facial expression on the faces of different people and can distinguish male from female faces.

Newborns can also hear and are sensitive to the location of a sound source as well as to differences in the frequency of the sound wave. They also discriminate between louder and softer sounds, as indicated by the startle reflex and by rises in heart rate. Newborns can also discriminate among sounds of higher or lower pitch. Continuous rather than intermittent sounds and low tones rather than high-pitched ones are apparently those most soothing to infants.

Even young infants show a striking sensitivity to the tones, rhythmic flow, and individual sounds that together make up human speech. A young infant can make subtle discriminations among phonemes, which are the basic sounds of language, and is able to tell the difference between pa, ga, and ba. Furthermore, infants less than one year old can make discriminations between phonemes that some adults cannot because the particular discrimination is not present in the adult language. A distinction between ra and la does not exist in the Japanese language, and hence Japanese adults fail to make that discrimination. Japanese infants under nine months can discriminate between these two phonemes but lose that ability after one year because the language they hear does not require that discrimination.

Both movement and contrasts between dark and light tend to attract an infants attention. When an alert newborn is placed in a dark room, he opens his eyes and looks around for edges. If he is shown a thick black bar on a white background, his eyes dart to the bars contour and hover near it, rather than wander randomly across the visual field. Certain other visual qualities engage the infants attention more effectively than do others. The colour red is more attractive than others, for example, and objects characterized by curvilinearity and symmetry hold the infants attention longer than do ones with straight lines and asymmetric patterns. Sounds having the pitch and timbre of the human voice are more attractive than most others; the newborn is particularly responsive to the tones of a mothers voice, as well as to sounds with a great deal of variety. These classes of stimuli tend to elicit the most prolonged attention during the first 8 to 10 weeks of life. During the infants third month a second principle, called the discrepancy principle, begins to assume precedence. According to this principle, the infant is most likely to attend to those events that are moderately different from those he has been exposed to in the past. For instance, by the third month, the infant has developed an internal representation of the faces of the people who care for him. Hence, a slightly distorted facee.g., a mask with the eyes misplacedwill provoke more sustained attention than will a normal face or an object the infant has never seen before. This discrepancy principle operates in other sensory modalities as well.

Even infants less than one year old are capable of what appears to be complex perceptual judgments. They can estimate the distance of an object from their body, for example. If an infant is shown a rattle and hears its distinctive sound and the room is then darkened, the infant will reach for the rattle if the sound indicates that the object can be grasped but will not reach if the sound indicates that it is beyond his grasp.

More dramatically, infants will also reach for an object with a posture appropriate to its shape. If an infant sees a round object in the shape of a wheel and hears its distinctive sound and also sees a smaller rattle and hears its sound, he will reach in the dark with one hand in a grasping movement if he hears the sound of the rattle but will reach with both hands spread apart if he hears the sound associated with the wheel.

The four-month-old infant is also capable of rapidly learning to anticipate where a particular event will occur. After less than a minute of exposure to different scenes that alternate on the right and left side of their visual field, infants will anticipate that a picture is about to appear on the right side and will move their eyes to the right before the picture actually appears. Similarly, infants only five to six months old can detect the relation between the shape of a persons mouth and the sound that is uttered. Thus, they will look longer at a face that matches the sound they are hearing than at one where there is a mismatch between the mouths movements and the sound being uttered.

Infants develop an avoidance reaction to the appearance of depth by the age of 8 to 10 months, when they begin to crawl. This discovery was made on the surface of an apparatus called the visual cliff. The latter is a table divided into two halves, with its entire top covered by glass. One half of the top has a checkerboard pattern lying immediately underneath the glass; the other half is transparent and reveals a sharp drop of a metre or so, at the bottom of which is the same checkerboard pattern. The infant is placed on a board on the centre of the table. The mother stands across the table and tries to tempt her baby to cross the glass on either the shallow or the deep side. Infants younger than seven months will unhesitatingly crawl to the mother across the deep side, but infants older than eight months avoid the deep side and refuse to cross it. The crying and anxiety that eight-month-olds display when confronted with the need to cross the deep side are the result of their ability to perceive depth but also, and more importantly, their ability to recognize the discrepancy of sitting on a solid surface while nevertheless seeing the visual bottom some distance below. Both nervous-system maturation and experience contribute to this particular cognitive advance.

Finally, infants create perceptual categories by which to organize experience, a category being defined as a representation of the dimensions or qualities shared by a set of similar but not identical events. Infants will treat the different colours of the spectrum, for example, according to the same categories that adults recognize. Thus, they show greater attentiveness when a shade of red changes to yellow than when a light shade of red merely replaces a darker shade of the same colour. Five-month-old infants can tell the difference between the moving pattern of lights that corresponds to a person walking and a randomly moving version of the same number of lights, suggesting that they have acquired a category for the appearance of a person walking. By one year of age, infants apparently possess categories for people, edible food, household furniture, and animals. Finally, infants seem to show the capacity for cross-modal perceptioni.e., they can recognize an object in one sensory modality that they have previously perceived only in another. For example, if an infant sucks a nubby pacifier without being able to see it and then is shown that pacifier alongside a smooth one, the infants longer look at the nubby pacifier suggests that he recognizes it, even though he previously experienced only its tactile qualities.

Infants make robust advances in both recognition memory and recall memory during their first year. In recognition memory, the infant is able to recognize a particular object he has seen a short time earlier (and hence will look at a new object rather than the older one if both are present side by side). Although newborns cannot remember objects seen more than a minute or two previously, their memory improves fairly rapidly over the first four or five months of life. By one month they are capable of remembering an object they saw 24 hours earlier, and by one year they can recognize an object they saw several days earlier. Three-month-old infants can remember an instrumental response, such as kicking the foot to produce a swinging motion in a toy, that they learned two weeks earlier, but they respond more readily if their memory is strengthened by repeated performances of the action.

By contrast, recall memory involves remembering (retrieving the representation, or mental image) an event or object that is not currently present. A major advance in recall memory occurs between the 8th and 12th months and underlies the childs acquisition of what Piaget called the idea of the permanent object. This advance becomes apparent when an infant watches an adult hide an object under a cloth and must wait a short period of time before being allowed to reach for it. A six-month-old will not reach under the cloth for the hidden object, presumably because he has forgotten that the object was placed there. A one-year-old, however, will reach for the object even after a 30-second delay period, presumably because he is able to remember its being hidden in the first place. These improvements in recall memory arise from the maturation of circuits linking various parts of the brain together. The improvements enable the infant to relate an event in his environment to a similar event in the past. As a result, he begins to anticipate his mothers positive reaction when the two are in close face-to-face interaction, and he behaves as if inviting her to respond. The infant may also develop new fears, such as those of objects, people, or situations with which he is unfamiliari.e., which he cannot relate to past experiences using recall memory.

As stated previously, Piaget identified the first phase of mental development as the sensorimotor stage (birth to two years). This stage is marked by the childs acquisition of various sensorimotor schemes, which may be defined as mental representations of motor actions that are used to obtain a goal; such actions include sucking, grasping, banging, kicking, and throwing. The sensorimotor stage, in turn, was differentiated by Piaget into six subphases, the first four of which are achieved during the initial year. During the first subphase, which lasts one month, the newborns automatic reflexes become more efficient. In the second subphase, the infants reflex movements become more coordinated, though they still consist largely of simple acts (called primary circular actions) that are repeated for their own sake (e.g., sucking, opening and closing the fists, and fingering a blanket) and do not reflect any conscious intent or purpose on the infants part. During the third phase, lasting from the 4th to the 8th month, the infant begins to repeat actions that produce interesting effects; for example, he may kick his legs to produce a swinging motion in a toy. In the fourth subphase, from the 8th to the 12th month, the child begins coordinating his actions to attain an external goal; he thus begins solving simple problems, building on actions he has mastered previously. For example, he may purposely knock down a pillow to obtain a toy hidden behind it. During the fifth subphase, covering the 12th to 18th months, the child begins to invent new sensorimotor schemes in a form of trial-and-error experimentation. He may change his actions toward the same object or try out new ones to achieve a particular goal. For example, if he finds that his arm alone is not long enough, he may use a stick to retrieve a ball that rolled beneath a couch. In the final subphase of infancy, which is achieved by about the 18th month, the child starts trying to solve problems by mentally imagining certain events and outcomes rather than by simple physical trial-and-error experimentation.

The childs actions thus far have shown progressively greater intentionality, and he has developed a primitive form of representation, which Piaget defined as a kind of mental imagery that can be used to solve a problem or attain a goal for which the child has no habitual, available action. An important part of the childs progress in his first year is his acquisition of what Piaget calls the idea of object permanencei.e., the ability to treat objects as permanent entities. According to Piaget, the infant gradually learns that objects continue to exist even when they are no longer in view. Children younger than six months do not behave as if objects that are moved out of sight continue to exist; they may grab for objects they see but lose all interest once the objects are withdrawn from sight. However, infants of nine months or older do reach for objects hidden from view if they have watched them being hidden. Children aged 12 to 18 months may even search for objects that they have not themselves witnessed being hidden, indicating that they are capable of inferring those objects location. Show such a child a toy placed in a box, put both under a cover, and then remove the box; the child will search under the cover as though he inferred the location of the toy.

The first of the two basic sounds made by infants includes all those related to crying; these are present even at birth. A second category, described as cooing, emerges at about eight weeks and includes sounds that progress to babbling and ultimately become part of meaningful speech. Almost all children make babbling sounds during infancy, and no relationship has been established between the amount of babbling during the first six months and the amount or quality of speech produced by a child at age two. Vocalization in the young infant often accompanies motor activity and usually occurs when the child appears excited by something he sees or hears. Environmental influences ordinarily do not begin to influence vocalization seriously before two months of age; in fact, during the first two months of postnatal life, the vocalizations of deaf children born to deaf parents are indistinguishable from those of infants born to hearing parents. Environmental effects on the variety and frequency of the infants sounds become more evident after roughly eight weeks of age. The use of meaningful words differs from simple babbling in that speech primarily helps to obtain goals, rather than simply reflecting excitement.

Emotions are distinct feelings or qualities of consciousness, such as joy or sadness, that reflect the personal significance of emotion-arousing events. The major types of emotions include fear, sadness, anger, surprise, excitement, guilt, shame, disgust, interest, and happiness. These emotions develop in an orderly sequence over the course of infancy and childhood.

Even during the first three or four months of life, infants display behavioral reactions suggestive of emotional states. These reactions are indicated by changes in facial expression, motor activity, and heart rate and of course by smiling and crying. Infants show a quieting of motor activity and a decrease in heart rate in response to an unexpected event, a combination that implies the emotion of surprise. A second behavioral profile, expressed by increased movement, closing of the eyes, an increase in heart rate, and crying, usually arises in response to hunger or discomfort and is a distress response to physical privation. A third set of reactions includes decreased muscle tone and closing of the eyes after feeding, which may be termed relaxation. A fourth pattern, characterized by increased movement of the arms and legs, smiling, and excited babbling, occurs in response to moderately familiar events or social interaction and may be termed excitement. In the period from 4 to 10 months, new emotional states appear. The crying and resistance infants display at the withdrawal of a favourite toy or at the interruption of an interesting activity can be termed anger. One-year-old infants are capable of displaying sadness in response to the prolonged absence of a parent.

Finally, infants begin displaying signs of the emotion of fear by their fourth to sixth month; a fearful response to noveltyi.e., to events that are moderately discrepant from the infants knowledgecan be observed as early as four months. If an infant at that age hears a voice speaking sentences but there is no face present, he may show a fearful facial expression and begin to cry. By 7 to 10 months of age, an infant may cry when approached by an unfamiliar person, a phenomenon called stranger anxiety. A month or two later the infant may cry when his mother leaves him in an unfamiliar place; this phenomenon is called separation anxiety. It is no accident that both stranger and separation anxiety first appear about the time the child becomes able to recall past events. If an infant is unable to remember that his mother had been present after she leaves the room, he will experience no feeling of unfamiliarity when she is gone. However, if he is able to recall the mothers prior presence and cannot understand why she is no longer with him, that discrepancy can lead to anxiety. Thus, the appearance of stranger and separation anxiety are dependent on the improvement in memorial ability.

These emotions in young infants may not be identical to similar emotional states that occur in older children or adolescents, who experience complex cognitions in concert with emotion; these are missing in the young infant. The older childs anger, for example, can remain strong for a longer period of time because the child can think about the target of his anger. Thus, it may be an error to attribute to the young infant the same emotional states that one can assume are present in older children.

Perhaps the central accomplishment in personality development during the first years of life is the establishment of specific and enduring emotional bonds, or attachment. The person to whom an infant becomes emotionally attached is termed the target of attachment. Targets of attachment are usually those persons who respond most consistently, predictably, and appropriately to the babys signals, primarily the mother but also the father and eventually others. Infants are biologically predisposed to form attachments with adults, and these attachments in turn form the basis for healthy emotional and social development throughout childhood. Infants depend on their targets of attachment not only for food, water, warmth, and relief from pain or discomfort but also for such emotional qualities as soothing and placating, play, consolation, and information about the world around them. Moreover, it is through the reciprocal interactions between child and parent that infants learn that their behaviour can affect the behaviour of others in consistent and predictable ways and that others can be counted on to respond when signaled.

Infants who do not have a particular adult devoted to their care often do not become strongly attached to any one adult and are less socially responsiveless likely to smile, vocalize, laugh, or approach adults. Such behaviour has been observed in children raised in relatively impersonal institutional surroundings and is shared by monkeys reared in isolation.

The social smiling of two-month-old infants invites adults to interact with them; all normal human infants show a social smile, which is, in fact, their first true sign of social responsiveness. The social smile is apparently innate in the human species. At about six months of age infants begin to respond socially to particular people who become the targets of attachment. Although all infants develop some form of attachment to their caregivers, the strength and quality of that attachment depends partly on the parents behaviour to the child. The sheer amount of time spent with a child counts for less than the quality of the adult-child interaction in this regard. The parents satisfaction of the infants physical needs is an important factor in their interaction, but sensitivity to the childs needs and wishes, along with the provision of emotional warmth, supportiveness, and gentleness are equally important. Interestingly, mothers and fathers have been observed to behave differently with their infants and young children: mothers hold, comfort, and calm their babies in predictable and rhythmic ways, whereas fathers play and excite in unpredictable and less rhythmic ways.

One significant difference has been detected in the quality of infants attachment to their caregiversthat between infants who are securely attached and those who are insecurely attached. Infants with a secure attachment to a parent are less afraid of challenge and unfamiliarity than are those with an insecure attachment.

During the first two years of life, the presence of targets of attachment tends to mute infants feelings of fear in unfamiliar situations. A one-year-old in an unfamiliar room is much less likely to cry if his mother is present than if she is not. A one-year-old is also much less likely to cry at an unexpected sound or an unfamiliar object if his mother is nearby. Monkeys, too, show less fear of the unfamiliar when they are with their mothers. This behavioral fact has been used to develop a series of experimental situations thought to be useful in distinguishing securely from insecurely attached infants. These procedures consist of exposing a one-year-old to what is known as the strange situation. Two episodes that are part of a longer series in this procedure involve leaving the infant with a stranger and leaving the infant alone in an unfamiliar room. Children who show only moderate distress when the mother leaves, seek her upon her return, and are easily comforted by her are assumed to be securely attached. Children who do not become upset when the mother leaves, play contentedly while she is gone, and seem to ignore her when she returns are termed insecurely attachedavoidant. Finally, children who become extremely upset when the mother leaves, resist her soothing when she returns, and are difficult to calm down are termed insecurely attachedresistant. About 65 percent of all American children tested are classed as securely attached, 21 percent as insecurely attachedavoidant, and 14 percent as insecurely attachedresistant. All other things being equal, it is believed that those children who demonstrate a secure attachment during the first two years of life are likely to remain more emotionally secure and be more socially outgoing later in childhood than those who are insecurely attached. But insecurely attachedresistant children are more likely to display social or emotional problems later in childhood. The development of a secure or insecure attachment is partly a function of the predictability and emotional sensitivity of an infants caregiver and partly the product of the infants innate temperament.

Individual infants tend to vary in their basic mood and in their typical responses to situations and events involving challenge, restraint, and unfamiliarity. Infants may differ in such qualities as fearfulness, irritability, fussiness, attention span, sensitivity to stimuli, vigour of response, activity level, and readiness to adapt to new events. These constitutional differences help make up what is called a childs temperament. It is believed that many temperament qualities are mediated by inherited differences in the neurochemistry of the brain.

Most individual differences in temperament observed in infants up to 12 months in age do not endure over time and are not predictive of later behaviour. One temperamental trait that is more lasting, however, is that of inhibition to the unfamiliar. Inhibited children, who account for 1020 percent of all one-year-old children, tend to be shy, timid, and restrained when encountering unfamiliar people, objects, or situations. As young infants, they show high levels of motor activity and fretfulness in response to stimulation. (They are also likely to be classified as insecurely attachedresistant when observed in the strange situation.) By contrast, uninhibited children, who account for about 30 percent of all children, tend to be very sociable, fearless, and emotionally spontaneous in unfamiliar situations. As infants, they display low levels of motor activity and irritability in response to unfamiliar stimuli. Inhibited children have a more reactive sympathetic nervous system than do uninhibited children. Inhibited children show larger increases in heart rate in response to challenges and larger increases in diastolic blood pressure when they change from a sitting to a standing posture. In addition, inhibited children show greater activation of the frontal cortex on the right side of the brain, while uninhibited children show greater activation of the frontal cortex on the left side.

These two temperament profiles are moderately stable from the second to the eighth year; studies reveal that about one-half of those children classed as inhibited at age two are still shy, introverted, and emotionally restrained at age eight, while about three-quarters of those children classed as uninhibited have remained outgoing, sociable, and emotionally spontaneous.

Continue reading here:
human behavior | Definition, Theories, & Development ...

Human Behavior

Theories Used in Social Work Practice & Practice Models

February 23, 2019 student

Social work theories are general explanations that are supported by evidence obtained through the scientific method. A theory may explain human behavior, for example, by describing how humans interact or how humans react to certain stimuli.

Social work practice models describe how social workers can implement theories. Practice models provide social workers with a blueprint of how to help others based on the underlying social work theory. While a theory explains why something happens, a practice model shows how to use a theory to create change.

Social Work Theories

There are many social work theories that guide social work practice. Here are some of the major theories that are generally accepted in the field of social work:

Systems theorydescribes human behavior in terms of complex systems. It is premised on the idea that an effective system is based on individual needs, rewards, expectations, and attributes of the people living in the system. According to this theory, families, couples, and organization members are directly involved in resolving a problem even if it is an individual issue.

Social learning theoryis based on Albert Banduras idea that learning occurs through observation and imitation. New behavior will continue if it is reinforced. According to this theory, rather than simply hearing a new concept and applying it, the learning process is made more efficient if the new behavior is modeled as well.

Psychosocial development theoryis an eight-stage theory of identity and psychosocial development articulated by Erik Erikson. Erikson believed everyone must pass through eight stages of development over the life cycle: hope, will, purpose, competence, fidelity, love, care, and wisdom. Each stage is divided into age ranges from infancy to older adults.

Psychodynamic theorywas developed by Freud, and it explains personality in terms of conscious and unconscious forces. This social work theory describes the personality as consisting of the id (responsible for following basic instincts), the superego (attempts to follow rules and behave morally), and the ego (mediates between the id and the ego).

Transpersonal theoryproposes additional stages beyond the adult ego. In healthy individuals, these stages contribute to creativity, wisdom, and altruism. In people lacking healthy ego development, experiences can lead to psychosis.

Rational choice theoryis based on the idea that all action is fundamentally rational in character, and people calculate the risks and benefits of any action before making decisions.

Social Work Practice Models

There are many different practice models that influence the way social workers choose to help people meet their goals. Here are some of the major social work practice models used in various roles, such as case managers and therapists:

Problem solvingassists people with the problem solving process. Rather than tell clients what to do, social workers teach clients how to apply a problem solving method so they can develop their own solutions.

Task-centered practiceis a short-term treatment where clients establish specific, measurable goals. Social workers and clients collaborate together and create specific strategies and steps to begin reaching those goals.

Narrative therapyexternalizes a persons problem by examining the story of the persons life. In the story, the client is not defined by the problem, and the problem exists as a separate entity. Instead of focusing on a clients depression, in this social work practice model, a client would be encouraged to fight against the depression by looking at the skills and abilities that may have previously been taken for granted.

Cognitive behavioral therapyfocuses on the relationship between thoughts, feelings, and behaviors. Social workers assist clients in identifying patterns of irrational and self-destructive thoughts and behaviors that influence emotions.

Crisis intervention modelis used when someone is dealing with an acute crisis. The model includes seven stages: assess safety and lethality, rapport building, problem identification, address feelings, generate alternatives, develop an action plan, and follow up. This social work practice model is commonly used with clients who are expressing suicidal ideation.

Read more from the original source:
Theories Used in Social Work Practice & Practice Models

Neuroscience

Neuroscience | UCSF Graduate Division

February 22, 2019 student

The Neuroscience PhD program prepares students for independent research and teaching in neuroscience. It seeks to train students who will be expert in one particular approach to neuroscientific research, but who will also have a strong general background in other areas of neuroscience and related disciplines. To achieve this objective, students take interdisciplinary core and advanced courses in neuroscience, as well as related courses sponsored by other graduate programs. In addition, students carry out research under the supervision of faculty members in the program.

The UCSF Neuroscience program faculty, who are among the world leaders in their respective areas of neuroscience, utilize innovative cellular, computational, electrophysiological, genetic, imaging, and molecular strategies to address outstanding problems in neuroscience. These approaches are employed in an integrative manner to engage in research in all areas of neuroscience, including behavior, biophysics, cell biology, development, neural systems, and disorders of the nervous system. The collaborative nature of the UCSF environment offers a unique opportunity in which to take advantage of the interdisciplinary nature of research at the frontier of modern neuroscience.

facultyThe Neuroscience program currently has 80 faculty members from the following departments and areas: anatomy, biochemistry and biophysics, bioengineering, the Brain and Spinal Cord Injury Center, cell and tissue biology, CMP, CVRI, the Diabetes Center, Gladstone Institutes, neurological surgery, neurology, the Neuroscience Imaging Center, ophthalmology, oral and maxillofacial surgery, otolaryngology, pathology, pediatrics-medical genetics, pediatrics-neonatology, pharmaceutical chemistry, physical therapy, physiology, and psychiatry.

The Neuroscience program is a member of the Program in Biological Sciences (PIBS).

sub-disciplines

Cellular/Molecular NeuroscienceDevelopmental NeuroscienceNeuroscience of DiseaseSystems/Computational Neuroscience

The Neuroscience program is based primarily at Mission Bay, but also has faculty at Parnassus, the UCSF affiliated Veterans Administration Medical Center, San Francisco General Hospital, and Gallo Center. Visit the program website for more information.

Visit link:
Neuroscience | UCSF Graduate Division

Neuroscience

Allied Academies Conference – Neuroscience | Conferences

February 22, 2019 student

Session on: Neuroscienceand Neurosurgery

Neuroscienceincludes brain, spinal cord and nerves related study. It is a place wherepsychology related studies collaborate with biology. Whereas ClinicalNeuroscience which is a branch of neuroscience deals on the diseases anddisorders of the brain and central nervous system and serves as a base to the futureof Psychiatry.

Neurosurgeryis mainly related with surgeries related to CNS andBrainincluding operative measures with diagnosis and treats the patients withdiseases/disorders related to the brain, spinal cord and spinal column, andperipheral nerves within all parts of the body specializes for both adult andpediatric patients.

Related Associations& Societies: Societyfor Neuroscience, Socialand Affective Neuroscience Society, British NeuroscienceAssociation, ChineseSociety for Neuroscience, GermanNeuroscience Society, International BehaviouralNeuroscience Society (IBNS), EEG and Clinical Neuroscience Society (ECNS), Cognitive NeuroscienceSociety (CNS), NorwegianNeuroscience Society (NTNU), Federationof Neuroscience Societies of Latin America and the Caribbean (FALAN)

Session on: Neurology

Disordersrelated to Nervoussystem and also with the diagonstic and the therapeutic measures taken withthe help of a neurologist. Neurologist is a specialised in neurology relatedcases and studies. He can also be involved in the clinical practices or in thetranslational research. Further can be defined and explained as power ofgenetics involved in neurology, have made its transformations with the complexities of both neurology and neuroscience at thebasic, translational, and presently also with the clinical level. NeurologicalProcedures could be defined with certain divisional tests like Lumbar puncture,Tensilon test, Electroencephalogram are used to diagnose neurologicaldisorders.

Considerationwith the disorder type, medical therapies for Neurologicaldisorders stays quite different which mainly includes Gene therapy, Stemcell therapy, Cognitive Therapy can be used to treat disorders like Parkinsonsdisease, Epilepsy,Obsessive Compulsive Disorder etc. Some of the basic therapy involves Changesin Lifestyle, Physiotherapy, Pain Management and Medication.

Related:Neurologicaldisorders Conference | Neurologicaldisorders Congress | Neurologicaldisorders Events | Neurologicaldisorders Meetings | Neurologicaldisorders Conferences

Related Associations& Societies: AmericanNeurological Association (ANA), Ataxia Study Group,Association of Parkinsonismand Related Disorders, CitizensUnited for Research in Epilepsy (CURE), BritishEpilepsy Association, The InternationalHeadache Society,The National Migraine Association (USA), MultipleSclerosis International Federation, NationalInstitute of Neurological Disorders and Stroke

Session on: Disordersof the Nervous System

Brainand Spinal Cord neoplasm which are considered to be very dangerous and lifethreatening causes, these kinds of studies comes under the aspects of NeuroOncology. Which represents diverse group of malignant tumours affectingmainly CNS or peripheral nervous system. Causes of Addictionmight be due to Alcohol: Intake and preference and Alcohol: Tolerance,dependence and withdrawal Alcohol: Developmental effects, Alcohol: Behavioraleffects, Alcohol: Neural mechanisms, Nicotine: Neural mechanisms of addiction, Nicotine:Reinforcement, seeking and reinstatement, Nicotine: Developmental effects, Cocaine:Neural mechanisms of addiction, Cocaine reinforcement, seeking andreinstatement, Amphetamine and related drugs: Neural mechanismsof addiction, Amphetamine and related drugs: Reinforcement, seeking and reinstatement,Cocaine, amphetamine and related drugs: Toxicity, Cocaine, amphetamine andrelated drugs: Developmental effects, Opioids: Neural mechanisms of addiction, Opioidreinforcement, seeking and reinstatement, Opioids: Tolerance, dependence andwithdrawal, Opioids: Developmental effects, Opioids: Translational and clinicalstudies, Cannabinoids: Neural mechanisms and addiction, Cannabinoid reinforcement,seeking and reinstatement, Cannabinoids: Tolerance, dependence and withdrawal, Cannabinoids:Developmental effects, Sedative hypnotics and anxiolytics, Addiction: Genetics, Addiction treatment:Translational and clinical studies, Learning, memory, dependence and addiction,Neural plasticity, dependence and addiction, Addiction: Behavioral pharmacology.Neuroinflammation is cause of inflammation of the nervous tissues which leadsto several life-threatening neurodegenerativedisorders multiple sclerosis, Alzheimer'sdisease, Parkinson's disease, tauopathies, amyotrophic lateral sclerosisand prion diseases.

Related Associations& Societies: Dementia Society ofAmerica, Alzheimer'sDisease International (ADI), AcousticNeuroma Association, AicardiSyndrome Foundation and Alliance for Aging Research, Alzheimers Association,Alzheimersand Related Disorders Society of India, ALSAssociation and ALS Therapy Development Institute, AlternatingHemiplegia of Childhood Foundation and Alzheimers Drug Discovery Foundation

Session on: Neuro-PsychiatricEpidemiology and Neuropsychopharmacology

Mostof drug effects lead to Neuropsychological disturbances with mental disturbances influencing behaviouralchanges, brainfunctioning mechanisms. Neuroepidemiology area includes researchmethodology and the epidemiology of neurological disease.To study the genetic and psychosocial related factors that correlate to theprevalence, incidence, and outcome strategies of different types of psychiatric and psychological disorder,which can be possibly studied under PsychiatricEpidemiology.

Related Associationsand Societies: AmericanNeuropsychiatric Association (ANPA), BritishNeuropsychiatry Association, SpecialInterest Group in Neuropsychiatry (SIGN),Royal Collegeof Psychiatrists, Instituteof Neurology, EuropeanBrain and Behaviour Society, American Board ofPsychiatry and Neurology, American Osteopathic Boardof Neurology and Psychiatry, Institute for Music andNeurologic Function, American PsychologicalAssociation

Session on: Stemcells and Neuroimmunomodulation

Inducedpluripotent stem cells and models of disease with neural differentiation ofpluripotent stem cells are studied under these categories. Embryonic stem cellsand adult stem cells are the two main sources from which the stem cell arises.Embryonic stem cells are formed during the blastocyst phase of embryologicaldevelopment.

Stem cellregulation and neuronal differentiation of CNS stemcells derived from the embryonic stages. Immunological and nervous systemfunctions along with auto immune diseases are briefly studied under Neuroimmunomodulation.

Related Associations& Societies: Myasthenia GravisAssociation, InternationalSociety of Neuro immunology, TheJapanese Society for Neuroimmunology, IndianImmunology Society, TheMultiple Sclerosis Association of America, Multiple SclerosisInternational Federation, Huntington's diseaseSociety of America and Hydrocephalus Association, InternationalDyslexia Association and International Essential Tremor Foundation, PeripheralNerve Society.

Session on: Autismand Neurodevelopmental disorders

Autismspectrum disorders (ASDs) are a group of developmental disabilities defined by

Significantsocial, communication, and behavioural impairments.

Majorfactors of improper functioning of the neurological system and brain are thesymptoms of NeurologicalDisorders. In children attention-deficit/hyperactivitydisorder (ADHD), autism, learning disabilities, intellectual disability (alsoknown as mental retardation), conduct disorders, cerebral palsy, and impairmentsin vision and hearing, childrens and infants with neurodevelopmental disorderscan experience difficulties with language and speech, motor skills, behavior,memory, learning, or other neurologicalfunctions. While the symptoms and behavior of neurodevelopmentaldisabilities often change or evolve as a child grows older, some disabilitiesare permanent.

Related Associations &Societies: World AutismOrganisation, AustralianAdvisory Board on Autism Spectrum Disorders, AutismAssociation of Western Australia, Bahrain Society forChildren with Behavioral and Communication Difficulties, Canadian NationalAutism Foundation, Autism Society of British Columbia, Autism SocietyOntario, Cyprus Association for Autistic Persons (CAAP), Beijing RehabilitationAssociation for Autistic Children (BRACC).

Session on: Migraineand headaches

Amigrainecan cause severe throbbing pain or a pulsing sensation, usually on just oneside of the head. It's often accompanied by nausea, vomiting, and extremesensitivity to light and sound.

Migraineattacks can cause significant pain for hours to days and can be so severe thatthe pain is disabling. Warning symptoms known as aura may occur before or withthe headache.These can include flashes of light, blind spots, or tingling on one side of theface or in your arm or leg. Medications can help prevent some migraines andmake them less painful.

Related Associations& Societies: American MigraineFoundation, AmericanHeadache Society, MigraineResearch Foundation, National HeadacheFoundation, NYU | TheDivision of Headache, ANIRCEF (Italy), AustrianHeadache Society, BritishAssociation for the Study of Headache, Romanian Society of NeurologyHeadache Group

Session on: SpinalCord Compression

Permanentloss of neurologicalfunctions with initial injury on spinal cord leads to a need of emergencyconditions. Cause could be neurodegenerativediseases mainly like arthritis. When cancer cells develops near the area ofSpine that leads to Malignant spinal cord compression. Pressure on spinal cordcauses Spinalcord compression.

Related Associationsand Society: American Spinal InjuryAssociation (ASIA), Canadian & AmericanSpinal Research Organization, Center for ParalysisResearch, Foundationfor Spinal Cord Injury Prevention Care & Cure, InternationalCampaign for Cure of Spinal Injury, NationalSpinal Cord Injury Association, Spinal Cord InjuryInformation Network

Session on: Alzheimer'sdisease, dementia and mild cognitive impairment

Alzheimer'sis a type of dementia that causes problems with memory, thinking and behavior.Symptoms usually develop slowly and get worse over time, becoming severe enoughto interfere with daily tasks. Physiological functions and processing of APPand APP metabolites, Abeta assembly and deposition, APP/Abeta: Animal models, APP/Abeta:Cellular models. In vivo therapeutics and In vitro therapeutics can also beincluded. Immune mechanisms are also considered to check the cause of Alzheimers disease.

Dementia is ageneral term for a decline in mental ability severe enough to interfere withdaily life. Memory loss is an example. Alzheimer's is the most common type ofdementia. Alzheimer's disease accounts for 60 to 80 percent of cases. Vasculardementia, which occurs after a stroke, is the second most common dementia type.But there are many other conditions that can cause symptoms of dementia,including some that are reversible, such as thyroid problems and vitamindeficiencies.

Mildcognitive impairment (MCI) causes a slight but noticeable and measurabledecline in cognitive abilities, including memory and thinking skills. A personwith MCI is at an increased risk of developing Alzheimer's or another dementia.

Related Associationsand Society: NationalAlzheimers Coordinating Center (NACC), University of WisconsinAlzheimers Disease Center, OregonHealth and Science University Aging and Alzheimers Disease Center, NationalCell Repository for Alzheimers Disease (NCRAD), AlzheimersDisease Cooperative Study (ADCS), AlzheimersSociety (UK), Alzheimers Drug Discovery Foundation.

Session on: Strokeand Cerebrovascular Disease

Stroke is nothingbut sudden Cerebrovascular accident which is a medical emergency.

Cerebrovasculardisease refers to a group of conditions that can lead to a cerebrovascularevent, such as a stroke. These events affect the blood vessels and blood supplyto the brain. If a blockage, malformation, or haemorrhage prevents the braincells from getting enough oxygen, brain damage can result.

Cerebrovasculardiseases can develop in various ways, including deep vein thrombosis (DVT)and atherosclerosis, where plaque builds up in the arteries. Stroke recovery:Pharmacological approaches to therapy, Stroke recovery: Non-pharmacologicalapproaches to therapy, Stroke imaging and diagnostic studies are elaborately studiedfor the patients under critical conditions.

Related Associationsand Society: International Societyof Cerebral Blood Flow and Metabolism, InternationalStroke Society, Societyfor NeuroAnesthesia and Critical Care, Association ofRehabilitation Nurses, EuropeanFederation of Neurological Societies, Neuropathology Societyof India, AmericanSpeech-Language-Hearing Association (ASHA).

Session on: PsychiatricDisorders

Psychiatric Disordersleads to Mental Illness or Mental retardness which disturbs mood, thinkingability, behavior. Comprises of more than 200 forms of Mental illness whichcreates serious mood disturbances, personality, personal habits or Socialwithdrawal. Psychiatric disorders are major sources of disability and excessmortality, and are more widespread than many realise. Research in this themeexplores key aspects of the biological, epidemiological and social aspects of psychiatry,in order to better understand and treat them, and to improve outcomes.

Related Associationsand Society: Barbados Association ofPsychiatrists, CostaRican Psychiatric Association, CubanSociety of Psychiatry, MexicanSociety of Neurology and Psychiatry, BolivianSociety of Psychiatry, AustrianAssociation for Psychiatry and Psychotherapy, TurkishNeuro-psychiatric Society.

Session on: Neurobiologyof Brain Tumors

NeurologicalComplications are mostly complicated cases among the brain cancers and braintumors which are the most lethal entities in human health and mode oftreatment is difficult. Types include:

Primarybrain tumors where as those that begin in the brain mostly occur in people ofall ages, although they are more commonly seen in children and older adults.

Metastaticbrain tumors have their spread to the brain from another organ in the bodyfound to be seen more common in adults than in children ages.

Related Associationsand Society: TheInternational Behavioural and Neural Genetics Society (IBANGS), Germansociety of Neurogenetics, National Society of Genetic Counsellors, The American Society ofHuman Genetics, Association for Clinical Genetic Science, Behavior GeneticsAssociation, HumanGenetics Society of Australasia, InternationalGenetic Epidemiology Society

Session on: Targetsof Drug Actions in CNS

Drugmainly targets enzymes and receptor regions in the form of proteins and nucleicacid in which activities can be modified relatedly by a dosage regimen i.e.drug whose activity can be modified by a drug. The drug could be alow-molecular weight chemically inert compound or a biological compound as arecombinant protein or an antibody. The targets of Drug should show chemical,mechanical and biological responses including their in-vitro and in-vivomethods relevant to diseases. Whereas the main Neurotransmitters during theprocess of Neurotransmission,chemical targets includes mainly GABA, Glutamate etc. that operates throughfunctioning of Neuromodulators like 5 Epinephrine, Prostanoids, 5-Hydroxytryptamine, Acetylcholine that acts through both ligand gated channels andG-protein coupled receptors. Function as both Neuromodulatorand Neurotransmitter.Lipid Solubility and Binding sites are the factors for chemical signallingvariations; Intracellular receptors occupy hydrophobic chemical signals to cellsurfaces. Agonists and Antagonists modify receptor activity. Chemicalsignalling in CNS takes place through blood or other fluids but is slow infunctioning process. The cell body, dendrites, axon are the major regions forintegration of signals in neuronal and organelle regions.

Related Associationsand Society: AmericanAssociation of Pharmaceutical Scientists (AAPS), AmericanAssociation for Clinical Chemistry (AACC), AmericanSociety for Clinical Laboratory Science (ASCLS), American Society forPharmacology and Experimental Therapeutics (ASPET), Associationof Clinical Research Organizations (ACRO), Centerfor Disease Control and Prevention, The InternationalSociety for Pharmacoepidemiology.

Session on: Nutrition-Gut-BrainAxis

Microbiotaand the connection to psychiatricand neurologicaldisorders. Gluten related antibodies in association with neurological andneuropsychiatric symptoms. Consequences of increased intestinal permeabilityseen in different gastrointestinal disorders and brain manifestations.

Related Associationsand Society: Brain InjuryAssociation of America, InternationalBrain Injury Association, NorthAmerican Brain Injury Society, AmericanBrain Tumor Association, EBIS- European Brain Injury Society, Federation of Associationsin Behavioral & Brain Sciences: FABBS.

Session on: Childand adult behavioural health

Correlatesthe studies of Stress and the Brain functions. Stressand neuroimmunologywith Cellular actions of stress mainly concerned with early-life Stress:Neural, neurochemical, and physiologic effects, molecular mechanisms andcellular effects, effects on anxiety, social function, and depression.Stress-modulated pathway of Hypothalamus, amygdala, and bed nucleus, Cortex,hippocampus, and striatum, brainstem are briefly studied.

Originally posted here:
Allied Academies Conference - Neuroscience | Conferences

Neuroscience

Neuroscience < 2018-2019 Catalog | Drexel University

February 22, 2019 student

Major: NeuroscienceDegree Awarded: Master of Science (MS) or Doctor of Philosophy (PhD)Calendar Type: SemesterTotal Credit Hours: 45.5 (MS, non-thesis); 55.5 (MS, thesis); 123.5 (PhD)Classification of Instructional Programs (CIP) code: 26.1501Standard Occupational Classification (SOC) code: 11-9121

The College of Medicine School of Biomedical Sciences and Professional Studies offers an interdepartmental and multidisciplinary graduate program in Neuroscience leading to MS and PhD degrees. The program provides a vibrant research component for both MS and PhD degrees leading to published scientific work in reputable journals, as well as training in the panoply of research and presentation skills required to conduct and disseminate the research. Students are provided with a curriculum of integrated courses that include the essentials for biomedical research as well as courses that span cellular, developmental, systems, and behavioral neurosciences, as well as neuroanatomy and injury and disease of the nervous system. Upon completing these programs, students pursue careers in academic, governmental, or industrial settings.

The MS program provides students a broad background in neuroscience and the techniques used in neuroscience research. In addition to the thesis-based MS program, Drexel offers a non-thesis degree program in which students can earn the degree without a research project by taking additional classes and writing a literature review paper. Students who wish to continue their graduate training after the MS degree may apply to the PhD program, and their credits may be applied to the doctoral program.

The PhD program trains individuals to conduct independent hypothesis-driven research and to teach in the neurosciences. The program includes two years of coursework as well as original research leading to published thesis work. Laboratory rotations begin in the fall of the first year.

For more information, visit the College of Medicine's Neuroscience Program web site.

Students interested in cellular, systems (including neuro-engineering) and behavioral neuroscience are encouragedto apply. There are no minimal requirements but applicants should be competitive with regard to grades, GRE scores, research experience, and letters of recommendation. Applicants are encouraged to use email to contact any of the faculty of the program with whom they may share scientific interests to discuss their suitability to the program and/or potential projects in relevant laboratories.

The Drexel University College of Medicine: School of Biomedical Sciences and Professional Studies has a rolling admissions policy, which means that complete applications are reviewed as they are received. Applicants are therefore advised to apply early, as decisions to accept or deny admission may be made before the official deadlines.

To learn more about applying to Drexel College of Medicine programs visit the College of Medicines Graduate School of Biomedical Sciences and Professional Studies website.

Students in both the PhD and MS programs begin their coursework with a core curriculum. The curriculum consists of a series of core courses that are shared by all of the biomedical graduate programs in the medical school, and a series of programmatic courses. All students in the Neuroscience Program must take the core curriculum, although the possibility exists for students to be excused from a particular course if they are able to prove that they already have the necessary knowledge required of the particular course.

During the second year, students select elective courses and begin their thesis research in consultation with the Advisory-Examination Committee. At the end of the second year, students take a comprehensive examination to qualify for PhD candidacy.

There are three rotations in the curriculum for which the student will be assigned a grade. The purpose of these rotations is to enable the student to select the most appropriate Graduate Advisor to supervise the research project for the student. The Neuroscience Program Director and Steering Committee will advise each student on the selection of rotations, as well as on the progress and outcome of rotations. Flexibility will be afforded in certain situations in which the student may be able to select an advisor before completing all three rotations, or in situations wherein it is advisable to terminate a particular rotation early in favor of another choice.

As well as taking all required courses, MS and PhD students mayre-enroll in courses having the status repeatable for credit (such as journal club, seminar and research courses) for the duration of their program in order to meet the total number of credits required for graduation.

MS without thesis: 45.5 semester credits

Students may opt to take additional approved electives in consultation with their advisor.

MS with thesis: 55.5 minimum semester credits

Students may opt to take additional approved electives in consultation with their advisor.

Students are required to complete 123.5 credits; for additional graduation requirements, refer to the School of Biomedical Sciences and Professional Studies Handbook and the Neuroscience Program Policies and Procedures.

During the third year, students develop a plan for their doctoral research in conjunction with their thesis advisor. A formal, written thesis proposal is then presented to the students Thesis Advisory Committee. Acceptance of this proposal after oral examination by the Committee leads to the final stage of doctoral training. PhD candidates then spend the majority of their time on thesis research. After concluding their research, they must submit and publicly defend their thesis before the Thesis-Examination Committee.

PhD students may enroll in courses having the status repeatable for credit (such as journal club, seminar and research courses) for the duration of their program in order to meet the degree completion requirement of 123.5 credits.

* Taken each Fall semester starting in the Second Year, until Thesis Defense

** Taken each Spring semester starting in the Second Year, until Thesis Defense

*** Taken each semester starting the Second Year, until Thesis Defense

More here:
Neuroscience < 2018-2019 Catalog | Drexel University

Neuroscience

Department of Neurosciences at UC San Diego School of Medicine

February 22, 2019 medical

Litvan Wins AAN Movement Disorders Research Award

Professor Irene Litvan, M.D. was awarded the 2018 AAN Movement Disorders Research Award in recognition of outstanding achievements in the field of Parkinson's disease and other movement disorders.

Professor John Ravits, M.D., has been awarded with the prestigious Sheila Essey Award for ALS research. Read more

Dr Joseph Gleeson, MD, has won the Constance Lieber Prize for Innovation in Developmental Neuroscience. Read more

Dr Sean Evans, MD, has won the Barbara and Paul Saltman Distinguished Teaching Award (2016-17).

More:
Department of Neurosciences at UC San Diego School of Medicine