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:3/31/2015)... --  Guidepoint , a leading global research services firm, ... TRACKER, part of the Guidepoint TRACKER suite ... device and therapeutics markets. The Post-Surgical Pain Management TRACKER ... share, and adoption rates across three major modalities used ... The Post-Surgical Pain Management TRACKER will provide length ...
(Date:3/24/2015)... and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ) has announced the addition ... Report" report to their offering. This report analyzes ... by the following Segments: Face Biometrics, and Voice Biometrics. The report ... , Japan , Europe , ... & Africa , and Latin America ...
(Date:3/23/2015)... , March 23, 2015   HOYOS Labs , ... company, today announced that the Company will demonstrate multiple ... enterprise and consumers at Connect:ID on March 23 through ... HOYOS Labs will highlight the IEEE Biometric Open Protocol ... ; and enterprise access control system. BOPS was invented ...
Breaking Biology News(10 mins):Guidepoint Launches Post-Surgical Pain Management TRACKER 2Guidepoint Launches Post-Surgical Pain Management TRACKER 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3
... April 23, 2012 /PRNewswire-iReach/  -- Global Information Inc. ... discounted registration for three important Boston healthcare conferences: ... Pioneers from across the rapidly maturing kinase inhibitors field ... lies ahead at the Next-Gen Kinase Inhibitors Conference ...
... is a disorder in which there are recurring episodes of upper ... estimated to affect 1 in 5 adults in America. The serious ... found that middle-age and older men with even mild levels of ... While a link between OSA and stroke is clear, OSA,s effect ...
... of breast milk are well known, but why breastfeeding protects ... study in the Journal of Human Lactation (published ... ligand (TRAIL) in human milk, which might be one source ... samples of colostrum, the first milk available to newborns, and ...
Cached Biology News:Attendees Save Up To $800 on Boston-area Pharmaceutical and Healthcare Conferences, Early Bird Discounts Expiring April 27 2Attendees Save Up To $800 on Boston-area Pharmaceutical and Healthcare Conferences, Early Bird Discounts Expiring April 27 3Obstructive sleep apnea's damage evident after 1 month 2
(Date:5/4/2015)... Tenn. , May 4, 2015   ... developed a significantly better computer tool for finding ... many cancers but were difficult to identify with ... scientific journal Nature Methods . ... for Copy Number Segmentation by Regression Tree in ...
(Date:5/4/2015)... May 4, 2015  Tikcro Technologies Ltd. (OTCQB: TIKRF) ... on Form 20-F for the fiscal year ended December ... ("SEC"). The annual report on Form 20-F contains information ... in the area of cancer immune checkpoints. This project ... high specificity and binding in targeting certain identified immune ...
(Date:5/4/2015)... May 4, 2015 /PRNewswire/ - Fluorinov Pharma (Fluorinov), ... the appointment of Dr. Roger J Garceau, to ... biotech companies in matters including corporate development and ... and adds significant regulatory expertise as Fluorinov transitions ... brings 30 years of pharmaceutical development experience to ...
(Date:5/4/2015)... May 4, 2015  RegeneRx Biopharmaceuticals, Inc. (OTCQB: ... an independent team of researchers from ... B4 (TB4) plays an important role in accelerating ... in an experimental mouse model, by promoting blood ... damaged dermal tissue.  The research found that the ...
Breaking Biology Technology:Scientists dramatically improve method for finding common genetic alterations in tumors 2Scientists dramatically improve method for finding common genetic alterations in tumors 3Scientists dramatically improve method for finding common genetic alterations in tumors 4Tikcro Technologies Files Annual Report on Form 20-F for the Year Ended December 31, 2014 2Roger J Garceau joins Fluorinov board, adds clinical expertise to bromodomain program and oncology pipeline 2Roger J Garceau joins Fluorinov board, adds clinical expertise to bromodomain program and oncology pipeline 3Researchers Report that Thymosin B4 has a Major Role in Dermal Burn Wound Healing 2Researchers Report that Thymosin B4 has a Major Role in Dermal Burn Wound Healing 3
... The University of Nottingham have made a major breakthrough that ... the first time that 3-D molecular structures can be built ... step forward towards the development of new nano devices such ... In a paper published in the prestigious journal ...
... search for the next generation of semiconductors. Researchers ... National Laboratory (Berkeley Lab) and the University of ... of the semiconductor indium arsenide onto a silicon ... electronic properties. A member of the IIIV family ...
... first isolated in 2004 with the help of Scotch ... discover its potential applications. A single layer of carbon ... to flexible displays, graphene is strong, light, transparent, and ... we do with this new material? As researchers across ...
Cached Biology Technology:World-first to provide building blocks for new nano devices 2Ultrathin alternative to silicon for future electronics 2Ultrathin alternative to silicon for future electronics 3Doctoral candidate publishes on graphene's potential with NSF support 2Doctoral candidate publishes on graphene's potential with NSF support 3Doctoral candidate publishes on graphene's potential with NSF support 4