Navigation Links
Robotic joystick reveals how brain controls movement

ere 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
'"/>

Source:Johns Hopkins Medical Institutions


Page: 1 2 3

Related biology news :

1. Penn Researchers Use Robotic Surgery
2. Penn Surgeons Use Completely Robotic Surgery to Successfully Treat Prostate Cancer
3. Robotic whiskers can sense three-dimensional environment
4. Robotic therapy helps restore hand use after stroke
5. Robotic exoskeleton replaces muscle work
6. A bacterial genome reveals new targets to combat infectious disease
7. First real-time view of developing neurons reveals surprises, say Stanford researchers
8. Examination of internal wiring of yeast, worm, and fly reveals conserved circuits
9. NYU study reveals how brains immune system fights viral encephalitis
10. Study reveals new technique for fingerprinting environmental samples
11. Study reveals dramatic difference between breast cancers in US and Africa
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Robotic joystick reveals how brain controls movement

(Date:12/3/2014)... , Dec. 2, 2014   Marvin ... deployed, innovative test solutions for military, aerospace, and ... version of its successful TS-900 PXI semiconductor ... and features of high-end systems to customers at ... value compared to traditional ATE. ...
(Date:11/21/2014)... 2014 According to a new ... (Video, RFID, Access Control, Intrusion Detection, Parking Management, Under ... Component Service Geography - Global Forecasts to 2020", published ... to be around $25 Billion in 2014 and is ... a CAGR of 8.69%. Browse 116 market ...
(Date:11/21/2014)... VIEW, Calif. , Nov. 20, 2014 ... higher driver efficiency are piloting the North American and ... number of accidents growing, gesture recognition systems that are ... make a mark in the industry. ... the Automotive Gesture Recognition Market in Europe ...
Breaking Biology News(10 mins):Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 2Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 3Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4
... Ministry of Education and Research (BMBF) will fund the ... II) by German and international researchers to the tune ... The Helmholtz Research Centers Juelich, Berlin, and Geesthacht are ... The basis for these grants is the cooperation between ...
... 2010 Scientists from the Florida campus of The ... infectious protein that can cause fatal neurodegenerative disease such ... have the ability to adapt to survive in a ... lack DNA and RNA, they behave much like viruses, ...
... beetroot juice suggests it,s not only athletes who can benefit ... help the elderly or people with heart or lung-conditions enjoy ... the biggest stories in sports science over the past year ... people to exercise for up to 16% longer. The startling ...
Cached Biology News:German federal government bolsters neutron research in Garching 2German federal government bolsters neutron research in Garching 3Scripps Research scientists show prions mutate and adapt to host environment 2Scripps Research scientists show prions mutate and adapt to host environment 3Beetroot juice could help people live more active lives 2
(Date:12/19/2014)... The empty capsules market is ... population and technological innovations in the empty capsules ... catalysing the growth of the empty capsules market. ... , Scope of Report , The report will ... entrants/smaller firms to gauge the pulse of the ...
(Date:12/19/2014)... N.Y. , Dec. 18, 2014 Egenix, Inc. ... has been elected Chairman of the Board, to succeed ... and CEO, but will continue as a member of the ... he has added to the company over almost twenty years, ... The Board of Directors has established a Search Committee ...
(Date:12/17/2014)... (PRWEB) December 16, 2014 The ... since 2013, which is why IBISWorld updated its original ... continues to benefit from an intensified focus on environmental ... for new emission standards for power plants and a ... According to IBISWorld Industry Analyst Sarah Kahn, “a range ...
(Date:12/17/2014)... 2014 Achim Noack has been named ... Group. In this position, Noack will assist Jerry Stoller, ... develop marketing strategy and supervise global marketing management and ... has tremendous knowledge and experience in the crop protection ... experience and innovative thinking will be a great asset ...
Breaking Biology Technology:Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 2Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 3Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 4Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 2Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 3Achim Noack Joins Stoller Group as Global Vice President of Marketing and Administration 2
... September 27, 2011 Circassia Ltd, ... announced positive phase II clinical results showing that ... allergy symptoms compared with those on placebo.  The ... During the randomised, double-blind, placebo-controlled phase II study ...
... Researchers of the Chemical Engineering department and the Kavli ... have demonstrated that electrons can move freely in layers ... This new knowledge will be very useful for the ... The researchers published their findings on Sunday 25 September ...
... ( www.ucr.edu ) -- Two professors from the University ... $1.5 million to study a new approach that could ... and increase speed in the next generation of computers. ... chair of the materials science and engineering program, and ...
Cached Biology Technology:Circassia's Hay Fever Treatment Improves Patients' Allergy Symptoms in Phase II Clinical Trial 2Circassia's Hay Fever Treatment Improves Patients' Allergy Symptoms in Phase II Clinical Trial 3TU Delft: cheap and efficient solar cell made possible by linked nanoparticles 2Bold approach could change electronics industry 2Bold approach could change electronics industry 3
Coverslips for Microarrays, 1. *Category: MICROARRAY ACCESSORIES....
S. O'Hare & C.K. Atterwill • In vitro toxicity techniques for regular lab use. Ex vivo techniques are also covered with the aim of reducing and refining the use of animals in the future....
... The ScriptCap™ 2'-O-Methyltransferase converts Cap 0 ... mRNA. The Cap 1 structure has been ... by up to 50%. This improvement is ... the ScriptCap™ m7G Capping System as well ...
Form: Concentrated Applications: ELISA...
Biology Products: