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:


(Date:1/11/2017)... NEW BRUNSWICK, N.J. , Jan. 11, 2017  Michael Johnson, ... from Foundation Venture Capital Group, Inc., has been named to the ... Johnson, 27,  was one of 600 people in 20 fields ... only four percent of the 15,000 applicants were selected. ... He is currently a PhD ...
(Date:1/6/2017)... Colo. , Jan. 5, 2017  SomaLogic ... the "Digital Life Alliance" established by iCarbonX, the ... 2015 to build a "Global Digital Health Ecosystem ... on a combination of individual,s biological, behavioral and ... the agreement between the companies, SomaLogic will provide ...
(Date:1/4/2017)... 2017  For the thousands of attendees at this year,s International Consumer ... health and biometric measurement devices and services, will be featuring its new ... in A&D Medical,s special CES Exhibit Suite , the new upper ... the company,s WellnessConnected product platform.  ... ...
Breaking Biology News(10 mins):
(Date:1/19/2017)... Research and Markets ... has announced the addition of the "Implantable Biomaterials ... report to their offering. Report Highlights: ... detailed analysis on current and future market trends to identify the investment ... as the base numbers Key market trends across the ...
(Date:1/19/2017)... GAITHERSBURG, Md. , Jan. 19, 2017 ... Inc., a privately-held immunotherapeutics company targeting infectious diseases, ... for the merger of PharmAthene and Altimmune in ... Venture Fund, HealthCap, Truffle Capital and Redmont Capital. ... diversified immunotherapeutics company with four clinical stage and ...
(Date:1/19/2017)... ... January 18, 2017 , ... The American Medical Informatics ... its Data Sharing Policy. Specifically, the nation’s leading informatics experts, said data sharing ... existing policy. AMIA recommended that NIH earmark funding for researchers to produce and ...
(Date:1/19/2017)... ... January 19, 2017 , ... DaVita ... full spectrum of drug and device development, and Prism Clinical Research , ... clinicians, today announced Verified Clinical Trials (VCT) has been selected by ...
Breaking Biology Technology:
Cached News: