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:10/31/2014)... in cities is good for attracting species, but it may ... University of Iowa study has found. , The researchers surveyed ... and recorded the abundance of two insects that interact with ... trees, black cherry and black walnut, they didn,t find a ... that feed on the walnuts and black cherries and a ...
(Date:10/31/2014)... been studying the behavior of approximately 300 wild ... They observed that ravens slowly build alliances through ... they also observed that these affiliative interactions were ... about 50 % of the cases these interventions ... ravens, intervening can be potentially risky when the ...
(Date:10/30/2014)... LANSING, Mich. – When most animals begin life, cells ... or a vital organ. However, mammals, including humans, are ... a different first choice – to become the protective ... It,s during this critical first step that research from ... published in the current issue of PLOS ...
Breaking Biology News(10 mins):Green spaces don't ensure biodiversity in urban areas 2Identifying the source of stem cells 2
... Nelson Laboratories ( www.nelsonlabs.com ) will offer free ... in San Jose, CA ... Those interested in a consultation should register at ... Rollins will also present, "Selection, Testing and Validation ...
... Wilhoit and Timothy Coolong from the University of Kentucky ... application of organic mulches more efficient. The research team ... in the August issue of HortTechnology . The ... to document its efficiency. "We modified an unroller so ...
... Why do crosses between closely related species fail to ... Axel Imhof of Ludwig-Maximilians-Universitaet (LMU) in Munich shows that ... - of certain key proteins are crucial in mediating ... to the same biological species, if matings between them ...
Cached Biology News:Nelson Laboratories to Offer Free Biocompatibility Consultations During BIOMEDevice San Jose 2New bale unroller design deemed effective 2Origin of species: Protein imbalances doom hybrids 2
(Date:10/30/2014)... Investor-Edge has initiated coverage on ... Medivation Inc. (NASDAQ: MDVN ), Pharmacyclics Inc. ... MKT: SYN), and Ironwood Pharmaceuticals Inc. (NASDAQ: IRWD). Free ... http://investor-edge.com/register . On Wednesday, October 29, ... the Dow Jones Industrial Average declined 0.18%, to finish ...
(Date:10/30/2014)... UK (PRWEB) October 29, 2014 Global ... of the world economic crisis during 2008-2009, especially in ... has recovered and currently is keeping to a growing ... output volume is utilized in the construction segment. In ... of pipes, profiles, tubing, sheets and rigid film. Moreover, ...
(Date:10/30/2014)... On October 26th at the Mid ... leading applied stem cell research scientist Neil Riordan, ... talks on New Techniques for Enhancing Stem Cell ... Cells. , Dr. Riordan focused on historical medical ... AlphaGEMS that include: wound healing; inflammation and pain ...
(Date:10/30/2014)... 2014 Rancho BioSciences , the ... manually curated public data source TCGA for ... the data is now available for other oncology groups. ... and internal data sources for their Pharma, Government and ... the data that becomes more easily accessible. Rancho ...
Breaking Biology Technology:Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 2Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 4Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 5Global Polyvinyl Chloride Demand Is on Upward Trend Now, Says Merchant Research & Consulting in Its Topical Study 2Global Polyvinyl Chloride Demand Is on Upward Trend Now, Says Merchant Research & Consulting in Its Topical Study 3Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 2Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 3Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 4Rancho BioSciences Manually Curated TCGA Data Sets Available 2
... leading innovator in the development and commercialization of sensing systems ... (CBRNE) materials, today announced a media awareness initiative for JMAR,s ... online system for real-time detection of pathogens in water. ... ...
... release of GridGain 2.1 - the next version of its innovative ... ... January 13, 2009 -- GridGain Systems is proud to ... its innovative Java-based Open Cloud Platform. GridGain 2.1 provides the industry ...
... Coronary StentForms Alliance to Jointly Develop Drug Eluting ... announced today that that the company entered into ... incorporated subsidiary of Opto Circuits (OCI) Ltd., by ... Maxcor,s Genius MAGIC Cobalt Chromium Coronary Stent System ...
Cached Biology Technology:JMAR Technologies Raises Awareness of BioSentry -- A High Tech Counter to Bioterrorism 2JMAR Technologies Raises Awareness of BioSentry -- A High Tech Counter to Bioterrorism 3JMAR Technologies Raises Awareness of BioSentry -- A High Tech Counter to Bioterrorism 4GridGain 2.1 - Open Cloud Platform Enables Development of Native Cloud Applications 2GridGain 2.1 - Open Cloud Platform Enables Development of Native Cloud Applications 3Micell Forges Strategic Agreement to Develop Advanced Drug-Eluting Stents and Balloons 2Micell Forges Strategic Agreement to Develop Advanced Drug-Eluting Stents and Balloons 3
Prepared by multi-temperature ethanol fractionation with extensive charcoal treatment and dialysis.• Assay: ≥ 95 % (HPCE)• pH ~5.2 (10 mg/mL in 0.15 M NaCl)...
... DAPI (4,6-diamidine-2-phenylindole, dihydrochloride) is a ... nucleus blue in color. The ... contrast to red fluorochromes such ... or R-Phycoerythrin. DAPI can be ...
... (CYP450) metabolite postulated to play an autacoid ... In rat cerebral microvessels, 20-HETE is a ... is excreted mainly as the glucuronide conjugate. ... in human urine) is about 10-fold lower ...
Rabbit polyclonal to Quinaldic Acid ( Abpromise for all tested applications). Antigen: Synthetic peptide Quinaldic Acid conjugated to a protein carrier....
Biology Products: