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Enhancing Motor Learning with Visual-Motor Illusions – Neuroscience News

Summary: Researchers found that visual aids creating illusions of movement, like screens showing a hands motion, can enhance motor performance and early-stage motor learning. Functional near-infrared spectroscopy revealed distinct brain activity changes in motor learning regions compared to traditional third-person motion observation. These findings may have implications for innovative treatments for hemiplegic stroke patients.

Key Facts:

Source: Tokyo Metropolitan University

Researchers from Tokyo Metropolitan University showed that visual aids which create the illusion of movement, like a screen placed in front of ones hand showing the hand move, can improve motor performance and the early stages of motor learning.

Compared to observing third-person motions, functional near-infrared spectroscopy data also showed greater changes in brain activity in regions associated with motor learning. Findings like this might inform new treatment strategies for hemiplegic stroke patients.

Visual-motor illusion (VMI) is the curious illusion of watching your body move even while it is still. Imagine having a tablet screen placed in front of your hand. Your hand is hidden behind the tablet, and your hand is not moving. Now, imagine the screen playing a video of your hand moving; your eyes are telling you that your hand is moving, but it is not moving at all.

This unsettling situation is instantly resolved if you put the screen somewhere else; watching the screen now simply entails action observation (AO). Previous work has already shown that VMI and AO entail different responses in the brain, but the wider implications of VMI remained unclear.

Now, a team of scientists led by Assistant Professor Katsuya Sakai from Tokyo Metropolitan University have shown that VMI can improve motor performance and early-stage motor learning. Volunteers were set a specific task, rolling two metal ball around in one hand. After some initial testing, a visual aid was used which showed hands performing this exact action.

One group had the visual aid placed in front of their hand to invoke VMI, while another group simply watched the same video normally. Performance could be measured by the number of complete rolls that people managed.

Though both groups showed improvement, the VMI group showed more improvement than the AO group, both immediately after the video was shown to volunteers, and one hour afterwards. This not only shows improvement in performance but highlights that early-stage learning has also improved i.e. the changes can persist.

To understand what is happening in the brain, the team used functional near-infrared spectroscopy, a non-invasive technique that helps track activity in specific parts of the brain using external probes. They were able to find key differences between AO and VMI volunteers in parts of the brain associated with learning new movements.

Importantly, these changes were found to persist an hour after the visual stimuli, matching what they found from performance on the task. This was also in line with previous findings from the group showing how connectivity in parts of the brain responsible for motor execution was enhanced by VMI.

The team note that there is still a lot of work to be done. For example, these findings come from a study on healthy individuals, and there is yet to be any assessment of mid to long-term motor performance.

However, the insights gleaned from this study shed light on a unique strategy to improve motor performance and learning, which may one day be applied to the rehabilitation of hemiplegic stroke patients and guide the development of new treatments.

Funding: This work was supported by JSPS KAKENHI Grant Number 22K17569.

Author: GO TOTSUKAWA Source: Tokyo Metropolitan University Contact: GO TOTSUKAWA Tokyo Metropolitan University Image: The image is credited to Neuroscience News

Original Research: Open access. Differences in the early stages of motor learning between visualmotor illusion and action observation by Katsuya Sakai et al. Scientific Reports

Abstract

Differences in the early stages of motor learning between visualmotor illusion and action observation

The visual-motor illusion (VMI) induces a kinesthetic illusion by watching ones physically-moving video while the body is at rest. It remains unclear whether the early stages (immediately to one hour later) of motor learning are promoted by VMI. This study investigated whether VMI changes the early stages of motor learning in healthy individuals.

Thirty-six participants were randomly assigned to two groups: the VMI or action observation condition. Each condition was performed with the left hand for 20min.

The VMI condition induced a kinesthetic illusion by watching ones ball-rotation task video. The action observation condition involved watching the same video as the VMI condition but did not induce a kinesthetic illusion. The ball-rotation task and brain activity during the task were measured pre, post1 (immediately), and post2 (after 1h) in both conditions, and brain activity was measured using functional near-infrared spectroscopy.

The rate of the ball-rotation task improved significantly at post1 and post2 in the VMI condition than in the actionobservation condition. VMI condition lowers left dorsolateral prefrontal cortex and right premotor area activity from post1 to pre compared to the actionobservation condition. In conclusion, VMI effectively aids early stages ofmotor learning in healthy individuals.

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Enhancing Motor Learning with Visual-Motor Illusions - Neuroscience News

Will Ellen Pompeo Be in Season 20 of ‘Grey’s Anatomy’? – Good Housekeeping

Through the last 19 seasons,

The news that she was leaving the show at least as a full-time cast member last year left fans shocked, seeing how she is the Grey in Grey's Anatomy, and has been the heart and soul of the series since its beginning in 2005. But with confirmation that she will still remain an executive producer and do the show's voiceovers, fans are left wondering will we see Ellen at all on-screen during the upcoming 20th season? Here's what we know.

Lucky for fans, the 54-year-old actress is will make appearances throughout season 20, and continue her voiceover for the intro and endings of the episodes. In season 19, fans saw Meredith on-screen for a total of eight episodes, but for season 20, she's expected to be in at least two of them. "She's in the first episode," co-star and director Debbie Allen told ET. "And she's in the one I'm going to direct, so she won't be too far."

Two actually isn't bad, considering season 20 overall will be much shorter with only 10 episodes slated to premiere on March 14, 2024.

And fans are certainly eager for an update on the skilled surgeon's storyline. Last we saw, Meredith returned for the two-hour season 19 finale, where we saw her rekindle her relationship with Dr. Nick Marsh (Scott Speedman). But like with all Shonda storylines, we know that anything's game when it comes to Meredith Grey.

As for concern about her fully leaving the show in the future? There simply wouldn't be a show. According to The Hollywood Reporter, Shonda has emphasized that there would "be no Grey's Anatomy without Meredith Grey."

In the meantime, if you're curious about what's in store for the rest of the cast, read everything we know about the upcoming season 20 of the ABC hit drama here.

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Will Ellen Pompeo Be in Season 20 of 'Grey's Anatomy'? - Good Housekeeping

Ellen Pompeo Marks Her Return as Meredith Grey in ‘Grey’s Anatomy’ Season 20 First Look (Exclusive) – PEOPLE

After nearly two decades of medical marvels and dramatic twists, there are still more shakeups in store for Grey Sloan Memorial in Grey's Anatomy's 20th season.

In an exclusive first look at the upcoming installment, shared with PEOPLE, Ellen Pompeo is back as Meredith Grey for the hit medical drama's milestone return.

"How long do I have to wait?" Meredith asks before the scene shifts to a shot of the surgical interns getting ready for a new day. "What are you waiting for? Let's go," Miranda Bailey (Chandra Wilson) calls.

ABC

While walking the halls of the hospital, Miranda tells Meredith: "The interns are in trouble."

The teaser picks up where season 19 left off and gives a little insight into the cliffhangers that left fans wondering about the fate of their favorite characters in last year's finale.

ABC

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Jo Wilson (Camila Luddington) and Atticus Lincoln a.k.a. Link (Chris Carmack) are on the precipice of a budding romance, Richard Webber (James Pickens Jr.) struggles with his sobriety and Simone Griffith (Alexis Floyd) tells Lucas Adams (Niko Terho) they "need to talk about what happened" after their hookup.

When Teddy Altman (Kim Raver) collapses during an operation after complaining of a toothache, Winston Ndugu (Anthony Hill) reveals that "Dr. Altman is in critical condition."

ABC

The long-running medical drama, which wasrenewed for a 20th seasonin March 2023, will see some major changes.

Season 20 will be the first not to feature Pompeo as a series regular. The actress already hada scaled-back rolein season 19 but will remain as an executive producer on the series moving forward, in addition to providing the opening and closing voiceover for each episode.

In an installment ofVariety's Actors on Actorsseries, Pompeo opened up toher formerGreyscostarKatherine Heiglabout the future of her character.

Liliane Lathan/ABC/Getty

I will be making some appearances hopefully next year, if I can find some time, she said. Its not a complete goodbye. And I think weve got an interesting story to tell."

Pompeo isn't the only one fans will miss in the upcoming season. In March, Kelly McCreary, who took on the role of Meredith's half-sister Maggie Pierce, announced her departure from Grey's Anatomy after becoming a series regular in season 11.

"After nine seasons, I am saying goodbye to Maggie Pierce and her Grey Sloan family. It has been a tremendous honor to be a part of such a legendary television institution asGrey's Anatomy," she said in a statement. "I will always be grateful toShonda Rhimes,Krista Vernoffand ABC for the opportunity, and to the incredible fans for their passionate support."

"To spend nine years exploring a character inside and out, while reaching a global audience with impactful stories, is a rare gift," McCreary continued. "It has afforded me an opportunity to collaborate with, learn from, and be inspired by countless brilliant artists both in front of and behind the camera."

She added: "Playing Maggie Pierce has been one of the true joys of my life and I leave with profound gratitude for every step of this journey. I am excited for this next chapter, and what the future holds."

Season 20 of Grey's Anatomy premieres March 14 at 9 p.m. ET on ABC.

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Ellen Pompeo Marks Her Return as Meredith Grey in 'Grey's Anatomy' Season 20 First Look (Exclusive) - PEOPLE

Meredith Returns To Seattle In First Grey’s Anatomy Season 20 Trailer – Screen Rant

Summary

A new trailer for Grey's Anatomy season 20 teases the triumphant return of Meredith Grey. The titular doctor, played by Ellen Pompeo, was one of the main characrters of the long-running medical drama, which is set in and around the fictional Seattle Grace Hospital. However, after more than 400 episodes as one of the show's primary stars, Pompeo departed midway through season 19 in episode 7, titled "I'll Follow the Sun."

ABC has unveiled a new teaser for Grey's Anatomy season 20 showcasing Meredith's return to Seattle Grace. Check it out below:

The trailer opens with a clip of Meredith asking "how long do I have to wait?" alongside other characters speaking similar lines teasing the upcoming March 14 premiere date. This montage is followed by a barrage of clips showcasing the dramatic happenings of the season, including the possible firing of one of the new staff members and a medical emergency for Dr. Teddy Altman (Kim Raver).

It is currently unknown exactly how Meredith's life will be going at the time she returns to visit Seattle Grace when the show resumes following the Grey's Anatomy season 19 finale. However, her exit from the show was largely couched in positive change. The character finally decided to move away from Seattle so her precocious daughter Zola (Aniela Gumbs) could get a proper education at a school for gifted children in Boston.

Although Meredith has not been seen onscreen for some time, her exit from the Grey's Anatomy cast was never entirely permanent. She has already returned in a voice-only capacity, continuing her character's habit of narrating the show. Behind the scenes, Pompeo has also remained on board as an executive producer for the show which has defined nearly two decades of her career.

It is currently unknown exactly how many episodes of the upcoming season of Grey's Anatomy will feature Pompeo onscreen, though it has been confirmed she will be appearing in the premiere and at least one additional episode. The shortened post-strike season only features 10 episodes, so it seems somewhat unlikely she will stay for more. However, this quick return to the show reveals that Pompeo isn't averse to stopping by Seattle Grace time and again, meaning future seasons could potentially see further reappearances.

Source: ABC

Grey's Anatomy is considered one of the great television shows of our time, winning several awards and four Emmys. The high-intensity medical drama follows Meredith Grey and the team of doctors at Grey Sloan Memorial, who are faced with life-or-death decisions on a daily basis. They seek comfort from one another, and, at times, more than just friendship. Together they discover that neither medicine nor relationships can be defined in black and white.

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Meredith Returns To Seattle In First Grey's Anatomy Season 20 Trailer - Screen Rant

Greys Anatomy: Ellen Pompeo Returns To Grey Sloan Memorial In Season 20 Teaser; New Updates On Altman, Interns & More Watch – Deadline

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Greys Anatomy: Ellen Pompeo Returns To Grey Sloan Memorial In Season 20 Teaser; New Updates On Altman, Interns & More Watch - Deadline

‘Grey’s Anatomy’ Season 20 Teaser Meredith Returns to the OR – Collider

The Big Picture

It was unimaginable for fans of the long-running medical drama Greys Anatomy to think of Meredith Grey (Ellen Pompeo) in a scaled-back role in the upcoming Season 20. Now we finally have our first look at what is in store in the upcoming season as well as Meredith herself as ABC unveiled a new teaser and things are getting complicated. The new teaser opens with Meredith asking someone, How long do I have to wait? We then see all the chaos and madness that will ensue as the interns find themselves in trouble.

The footage also emphasizes their interpersonal relationships as we see Griffith and Adams, who have some serious talking to do, Teddy still seems to be in a critical condition since her collapse, and Richard is still battling his alcoholism. The drama never stops at Grey Sloan Memorial Hospital, and were all here for it.

Over the years, Greys Anatomy has kept reinventing itself in big and small measures to keep the audiences engaged while following the professional and personal lives of the medical staff. It has given fans ample events of the ER, epic love stories, heartbreaks, and plenty more while following Meredith who constantly faces challenges not only in her professional life but personal life as well, that fans have come to love the show for. Itll be interesting to see how the new season unfolds as Merediths role is scaled back. This season will also be a start for a new showrunner on the series as executive producer Meg Marinis steps in following the departure of previous showrunner Krista Vernoff. Marinis has been a part of the show since Season 3 and since has worked her way through the top and itll be interesting to see the new direction, she steers the ship in.

The series casts Chandra Wilson as Dr. Miranda Bailey, James Pickens, Jr. as Dr. Richard Webber, Kevin McKidd as Dr. Owen Hunt, Caterina Scorsone as Dr. Amelia Shepherd, Camilla Luddington as Dr. Jo Wilson, Kim Raver as Dr. Teddy Altman, Jake Borelli as Dr. Levi Schmitt, Chris Carmack as Dr. Atticus Lincoln, Anthony Hill as Dr. Winston Ndugu, Alexis Floyd as Dr. Simone Griffith, Harry Shum Jr. as Dr. Benson Kwan, Adelaide Kane as Dr. Jules Millin, Midori Francis as Dr. Mika Yasuda, and Niko Terho as Dr. Lucas Adams.

Gerys Anatomy Season 20 drops on March 14. You can know more details about the new season here and check out the new teaser below:

A drama centered on the personal and professional lives of five surgical interns and their supervisors.

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'Grey's Anatomy' Season 20 Teaser Meredith Returns to the OR - Collider

Anatomy of a botched gangland hit Blanchardstown’s nightmare before Christmas – The Irish Times

In terms of audacity, last Sundays Christmas Eve gun attack in a busy Blanchardstown restaurant in west Dublin has many parallels with the 2016 Regency Hotel attack.

In both cases, heavily armed perpetrators entered a busy premises, filled with families and children, and opened fire. In each attack, the gunmen were trying to kill a rival; in both cases they failed.

Both attacks shocked the nation and led to fears of retaliation. In the case of the Regency, those fears were well-founded. It remains to be seen if Blanchardstown will spark a similarly bloody series of events.

But thats where the similarities end.

Last Sundays shooting was marked by an almost unbelievable lack of forward planning. Sources described a chaotic attack by criminals who appeared to have failed to undertake even a basic scouting of the premises.

If it wasnt so tragic and distressing for all involved, it would be farcical, said one garda.

On Sunday, Brownes Steakhouse, a popular family restaurant on Blanchardstowns Main Street, was busy with diners enjoying a Christmas Eve meal. Some had just finished attending Mass in the local church while others had dropped in for dinner on their way home from Christmas shopping.

Among the customers, towards the back of the restaurant, was a 26-year-old man whose large muscles and hulking frame made him conspicuous among his fellow diners.

[Brazenness of Blanchardstown shooting shows younger criminals taste for extreme violence]

He was eating along with his father (47) and a group of family and friends. Just after 8pm, as the group were awaiting their main course, a white Audi pulled up outside and two young men got out.

One was Tristan Sherry, a 25-year-old minor criminal from west Dublin. The other remains unidentified. They held their weapons at their side and drew little attention as entered the restaurant. Sherry had a small automatic weapon, believed to be a machine pistol, while his accomplice was armed with a handgun-like weapon.

Sherry looked around frantically for his target, the muscle-bound 26-year-old, and at first could not seem to spot him. Eventually, he locked eyes on his targets group and strode towards them.

Tristan Sherry was stabbed to death after the botched hit in Blanchardstown. Photograph: Gofundme

It was then he was spotted. The following events happened almost simultaneously. Members of the group dived for cover as Sherry opened fire with his weapon. He fired several shots, at least one of which hit the younger mans father in the neck, before his gun appeared to jam.

Diners started fleeing as soon as Sherry opened fire, although some seated towards the back took cover behind tables.

Sherry attempted to flee through a back door but found it locked. He doubled back and started to run towards the front entrance but then the group tackled Sherry to the ground and disarmed him.

Members of the group continued to beat and kick Sherry before at least one started to stab him using a steak knife from the table. Later examinations showed he suffered 27 stab wounds.

As the beating continued, one of the group took out his phone and started filming. The distressing footage, which circulated for days on social media platforms before being removed, shows a close-up of a bloodied and barely conscious Sherry as he is hit and beaten with a chair. Sources say the beating continued for several minutes.

Some diners who remained filmed the chaos on camera phones, sending the footage to friends.

Some lad is after getting blasted, narrated one man.

By this stage Sherrys accomplice was long-gone. When he saw Sherrys gun jam, the man fled straight out the front door into the Audi and drove off, leaving his accomplice to face the music. He remains on the run from both garda and associates of Sherrys target who have vowed revenge.

As Sherry lay dying on the ground, units from the Garda Armed Response Unit rushed to the scene while the 47-year-old victim, who was bleeding profusely, was loaded into a car and driven to Connolly Memorial Hospital by his son, who was described as apoplectic with rage and grief.

At some point before garda could secure the scene, someone pocketed Sherrys gun. It remains missing.

The gunshot victim, who is suspected to be involved in organised crime with his son and is currently facing serious charges before the courts, remains in a serious condition in hospital but is expected to survive. Connolly is regarded as the best trauma hospital in the country and sources said doctors were quickly able to prevent further blood loss.

Garda believe the younger man was Sherrys primary intended victim while his father was more of a target of opportunity.

What happens next is hard to predict. Garda have appealed for witnesses and on Friday said they had made one arrest.

Two separate but parallel investigations are ongoing, one into the gun attack and the other into the subsequent fatal attack on Sherry.

Garda will prepare a file on the latter for the Office of the Director of Public Prosecutions which will have to decide if the actions of the men who attacked Sherry can be justified on the basis of self-defence or if they should face murder or manslaughter charges.

One factor in this decision will be the length of the attack and whether the men felt Sherry still posed a threat, despite being disarmed and almost unconscious on the floor. It is understood most of the incident was captured on high-quality CCTV.

The saying goes that self-defence is a shield, not a sword, said a barrister. In other words, if a person has the opportunity to retreat to safety, they must take that option if they want to later claim self-defence.

Sherrys killers could claim that in a crowded restaurant they had nowhere to run, but, according to the lawyer, self-defence must be proportional to the threat.

Even though Sherry went in with a gun, it appears obvious that quite quickly he no longer posed a threat, said the barrister.

Ultimately, its a subjective test, another lawyer said: Its not an exact science and each case is different.

In the event murder charges are brought, it will still be open to any accused to argue self-defence before a jury. They may also use a provocation defence, by claiming Sherrys action caused them to lose control, to argue a murder charge down to manslaughter, the lawyers said.

A more immediate concern for garda is the possibility of reprisal attacks. Sherrys attack is believed to relate to a complicated series of disputes involving drugs gangs from west Dublin who have thrived since garda dismantled the Byrne organised crime group in the wake of the Regency Hotel shooting.

These gangs have capitalised in the vacuum the valuable cocaine market left when the Byrnes, who represented the Kinahan gangs interests in Ireland, fell apart. Since 2018, as the appetite for cocaine in Irish society has grown, rival gangs, including one-time allies, have been intent on grabbing as much of the market as possible.

This has led to a series of shootings, assaults and arson attacks, including a shooting outside a school in Blanchardstown in 2019. However, unlike previous feuds and despite the high levels of violence on display there has been an almost total absence of fatal attacks in the west Dublin area.

The drugs market is only growing in size; this year the Garda National Drugs and Organised Crime Bureau seized more than 210 million worth of drugs, most of it cocaine up from 57 million in 2022.

Despite these significant Garda successes, such seizures amount to a fraction of what is getting into the country. Ireland is not alone; record amounts of cocaine are being smuggled into northern European ports from South America.

Murder rates and organised crime feuds in those countries have risen almost in tandem. To date Ireland has avoided the worst of this. The fear now is that is about to change.

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Anatomy of a botched gangland hit Blanchardstown's nightmare before Christmas - The Irish Times