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:7/14/2014)... 2014 How does oxygen control insect body size? What ... in the first issue of Current Opinion in Insect ... and more questions. , Current Opinion in Insect Science ... series. It is a review journal that aims to provide ... expanding volume of information published in the field of insect ...
(Date:7/14/2014)... The Biogerontology Research Foundation (BGRF), a UK-based charity ... challenges of a rapidly ageing population, hosted the ... 30th, with Aging Analytics, a company supporting financial ... , The speakers at the forum included: , ... Kong on ,Impact Investment to Advance Longevity Research, ...
(Date:7/14/2014)... discovery and description of Rhipidocyrtus muiri - a ... to represent a new genus and species. The long and ... is discussed in a recent paper published in the open ... male, and only known specimen of Rhipidocyrtus muiri , ... this it was transferred among several researchers in the early ...
Breaking Biology News(10 mins):BGRF hosts inaugural 21st Century Medicine Forum 2Serendipity at the Smithsonian: The 107-year journey of the beetle Rhipidocyrtus muiri 2Serendipity at the Smithsonian: The 107-year journey of the beetle Rhipidocyrtus muiri 3
... the National Institutes of Health will explore the role ... by NIH,s National Institute of Environmental Health Sciences (NIEHS), ... people more vulnerable to heat exposure; changing weather patterns; ... toxic chemicals; and the negative effects of climate change ...
... discovered in the 16-23 million years old sediments of the ... Helophorus sibiricus , a member of the water scavenger ... in Eurasia and reaches even North America. The species was ... based on specimens collected at Lake Baikal. It is aquatic ...
... 2011. In the central Arctic the proportion of old, thick ... largely consists of thin, one-year-old floes. This is one of ... Polar and Marine Research in the Helmholtz Association brought back ... The ship arrived at its home port of Bremerhaven ...
Cached Biology News:NIH launches research program to explore health effects from climate change 2NIH launches research program to explore health effects from climate change 3A living species of aquatic beetle found in 20-million-year-old sediments 2Young and thin instead of old and bulky 2Young and thin instead of old and bulky 3Young and thin instead of old and bulky 4
(Date:7/13/2014)... The discovery 30 years ago of soccer-ball-shaped carbon molecules ... research. Now, there appears to be a new ball ... University and Tsinghua University in China have shown that ... molecular cage similar to a carbon buckyball. It,s the ... a matter of speculationdoes indeed exist. , "This is ...
(Date:7/11/2014)... DUBLIN , July 11, 2014 ... "International Transfection Technology Market - Global Industry Analysis, ... report to their offering. ... to introduce nucleic acids (either DNA or RNA) into ... therapy, mutation of cancer cells and protein metabolism by ...
(Date:7/11/2014)... (PRWEB) July 11, 2014 Cayenne ... company specializing in the soft tissue reconstruction segment, ... Anchor System for surgeries involving the shoulder and ... through a novel, inserter-controlled deployment method. The unique ... partial deployment, anchor pull-out, or anchor displacement (also ...
(Date:7/10/2014)... Terascala, the industry leader in HPC ... former vice president of product management for Flexera Software, ... marketing. Terascala’s software when combined with leading compute and ... performance and most reliable solutions for processing big data. ... expansion and broaden its product portfolio. His leadership in ...
Breaking Biology Technology:Researchers discover boron 'buckyball' 2Researchers discover boron 'buckyball' 3International Transfection Technology Market - Industry Analysis, Size, Share, Growth, Trends and Forecast to 2019 2Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 2Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 3Terascala Expands Executive Team 2Terascala Expands Executive Team 3
... , Most Basic Recommended Cecil Instrumentation: , ... 500 l loop , Fraction collector , Column ... : , Researchers need to understand ... protein expression in healthy and diseased cells. , Hence the ...
... reliable and accurate long-range PCR and RT-PCR , ... RT-PCR Kits provide dedicated and highly reliable solutions for long-range,amplification from genomic DNA and cDNA. ... , QIAGEN LongRange PCR ... Amplification of extremely long PCR products up to 40 kb DNA or,12.5 kb ...
... LOS ANGELES, CA (August 10, 2006) - DoveBid, Inc., ( http://www.dovebid.com ... auction and valuation services, announced , today it ... Exchange auction online, on August 15, 2006. The event marks a milestone ... practice, and is expected , to bring to-date ...
Cached Biology Technology:Semi Preparative Purification of Proteins 2QIAGEN LongRange PCR and 2Step RT-PCR Kits 2World Class Life Science and Pharmaceutical Companies Leverage DoveBid s Global Reach for Asset Management and Disposition 2World Class Life Science and Pharmaceutical Companies Leverage DoveBid s Global Reach for Asset Management and Disposition 3
Biotin-OSu is used to label proteins, immunological agents, DNA and synthetic oligonucleotides. Biotin labeling is detected through enzymatically labeled avidin or streptavidin proteins that conforma...
Cross reactivity to St. Louis encephalitis (MSI-7) is determined by ELISA....
ANTI K. AEROGENES...
casein kinase 2, alpha 1 polypeptide, transcript variant 2, mRNA (cDNA clone MGC:15232 IMAGE:4121882), complete cds...
Biology Products: