HOME >> BIOLOGY >> NEWS
Robotic joystick reveals how brain controls movement

were asked to keep the joystick centered.

The research team found that after all this pushing in different directions the subjects still were inclined to push the joystick in the first direction, even when the joystick was perfectly centered and not moving. Somehow the brain and muscles in the arm had "learned" this simple movement over the course of the experiment, which took only a few minutes, according to the researchers, showing that sleep is not required for learning such simple movements.

The robot-controlled joystick used in these experiments can measure precisely how hard and in what direction it's being pushed by the hand holding it. Using computer programs, the researchers then were able to apply mathematical equations to these measurements and calculate predictions of how the brain might be "learning" these simple movements.

For example, by taking into account the number of repetitions it took for the subjects to push the joystick in the first direction to keep it centered and how long it took for the subjects to "forget" how hard to push the joystick, the predictions suggest that the brain learns muscle control using at least two different steps.

First, the computer programs were able to tease out that the brain picked up the control task quickly, but actually forgot the task quickly as well. But, at the same time, the brain also was learning the same task more slowly, and that was responsible for the subjects' being able to "remember" the initial joystick-pushing movement.

"Rehab is about training, and you want to be able to train the slow-learning system to be successful," says Shadmehr.

As a next step, the team is interested in uncovering which parts of the brain are responsible for slow-learning. They hope that teasing this system apart will not only improve the understanding of brain function, but also tailor therapy strategies to target slow-learning and increase recovery of muscle control after
'"/>

Contact: Audrey Huang
audrey@jhmi.edu
410-614-5105
Johns Hopkins Medical Institutions
23-May-2006


Page: 1 2 3

Related biology news :

1. Robotic cameras join search for Holy Grail of bird-watching
2. Satellite tracking reveals threats to Borneo pygmy elephants
3. New technology reveals seal behavior
4. Innovative research technique reveals another natural wonder in Yellowstone Park
5. Mathematics reveals genetic pattern of tumor growth
6. CU study reveals why starling females cheat
7. New collaborative research reveals chimpanzees can sustain multiple-tradition cultures
8. Genome of Clostridium botulinum reveals the background to worlds deadliest toxin
9. Analysis reveals extent of DNA repair army
10. UGA study reveals function of ubiquitous yet poorly understood microorganisms
11. Colorado River streamflow history reveals megadrought before 1490

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Robotic joystick reveals how brain controls movement

(Date:7/29/2014)... from scientists at the University of Kent has shown ... are regulated a breakthrough that could have a ... from Kent,s School of Biosciences uncovered the mechanism whereby ... known as actin filaments are ,fine-tuned, to ... filaments appear to completely stable, providing a framework for ...
(Date:7/29/2014)... new book that brings together two of the major ... profile of insect fossils through stunning photographs and unique ... James E Jepson, details the incredible preservation and diversity ... scene for what these remarkable fossils can tell us ... future of our planet. Like the mosquito in Jurassic ...
(Date:7/28/2014)... Food and Drug Administration (FDA) for other purposes can ... human cells, including those that cause Legionnaires, disease, brucellosis, ... mBio , the online open-access journal of the American ... non-antibiotic drugs that could one day help curb bacterial ... list inhibit the growth of at least three of ...
Breaking Biology News(10 mins):Unique images bring fossil insects back to life 2New route to identify drugs that can fight bacterial infections 2
(Date:7/29/2014)... PORTLAND, Oregon , July 29, 2014 ... titled, "Global surgical equipment market (types, applications and geography) ... Analysis, Research, Report, Opportunities, Segmentation and Forecast, 2013 - ... expected to reach $12.1 billion by 2020 registering a ... Due to the breakthrough achieved by the electro surgical ...
(Date:7/29/2014)... Philadelphia’s newest entrepreneurial incubation space is ready for ... The Innovation Center @3401 , a collaborative effort of ... to help attract and nurture start-up businesses in the ... , The Innovation Center @3401 (ic@3401), which is ... the new home of DreamIt Ventures and ...
(Date:7/29/2014)... 2014  United Therapeutics Corporation (NASDAQ: ... results for the second quarter ended June 30, ... that our medicines are reaching increasing numbers ... (PAH)," said Martine Rothblatt, Ph.D., United Therapeutics, ... launch this quarter of our extended-release tablet ...
(Date:7/29/2014)... Dr. Jason Wendel – recipient of a Regional Top Doctor ... 10 Plastic Surgeon Specialists for Nashville, TN – has released ... includes a Hydration Booster, Retexturing Night Crème, and Anti-aging C ... younger, more radiant appearance while protecting them from the sun’s ... why at Dr. J. J. Wendel Plastic Surgery, we have ...
Breaking Biology Technology:Global Surgical Equipment Market is expected to reach $12.1 billion by 2020 - Allied Market Research 2Global Surgical Equipment Market is expected to reach $12.1 billion by 2020 - Allied Market Research 3Innovation Center @3401 Opens for Business; DreamIt Ventures and Point.io First Residents 2Innovation Center @3401 Opens for Business; DreamIt Ventures and Point.io First Residents 3United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 2United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 3United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 4United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 5United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 6United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 7United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 8United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 9United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 10United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 11United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 12United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 13Dr. J. J. Wendel Launches New Line of Skin Care Products 2
Cached News: