Navigation Links
Stanford engineers redefine how the brain plans movement
Date:8/11/2011

In 1991, Carl Lewis was both the fastest man on earth and a profound long jumper, perhaps the greatest track-and-field star of all time in the prime of his career. On June 14th of that year, however, Carl Lewis was human. Leroy Burrell blazed through the 100-meters, besting him by a razor-thin margin of three-hundredths of a second. In the time it takes the shutter to capture a single frame of video, Lewis's three-year-old world record was gone.

In a paper just published in the journal Neuron, a team at the Stanford School of Engineering, led by electrical engineers Krishna Shenoy and Maneesh Sahani, explored the neurological explanations for why Lewis may have lost that day. The team, which included graduate students Afsheen Afshar, Gopal Santhanam, Byron Yu, and post-doctoral researcher Stephen Ryu, studied how the brain plans for and executes movements in reaction to a "go" signal.

The advent of new measurement technologies that permit researchers to monitor up to hundreds of individual neurons simultaneously, combined with new analytical mathematics, are providing a revealing look inside the brain and a better understanding of the neurological processes behind the planning and execution of motion.

"This research holds great promise in many areas of neuroscience, in particular human prostheses that can be controlled by the brain," said Shenoy.

Imprecision

The ability of humans to time the onset of planned movements is imprecise, often frustratingly so. In Carl Lewis's case, that imprecision cost him the race and the record. In fact, experts later pointed out that Burrell was not really the faster man that day; he was merely the faster off the blocks, beating Lewis at the gun by about five one-hundredths of a second, a difference that provided the margin of victory.

"Lewis may well have lost because he wasn't able to optimize his own motor plan and thus his reaction time was slow," said Shenoy.
'/>"/>

Contact: Andrew Myers
andrew.myers@stanford.edu
650-736-2245
Stanford School of Engineering
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Circadian clock may be critical for remembering what you learn, Stanford researchers say
2. Stanford researchers: Global warming is killing frogs and salamanders in Yellowstone Park
3. Key link in how plants adapt to climate discovered by Stanford researchers
4. Cell movements totally modular, Stanford study shows
5. Powerful online tool for protein analysis provided pro bono by Stanford geneticist
6. New World post-pandemic reforestation helped start Little Ice Age, say Stanford scientists
7. Stanford launches $100 million initiative to tackle energy issues
8. Biofuels boom could fuel rainforest destruction, Stanford researcher warns
9. From stem cells to new organs: Stanford and NYU scientists cross threshold in regenerative medicine
10. Stanford researchers develop biodegradable substitutes for wood, plastic bottles and other materials
11. Stanford scientists find new solutions for the arsenic-poisoning crisis in Asia
Post Your Comments:
*Name:
*Comment:
*Email:
(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)... DUBLIN , Mar. 24, 2015 Research and ... addition of the "Global Iris Recognition Market 2015-2019" ... forecast the Global Iris Recognition market to grow at ... This report covers the present scenario and ... for the period 2015-2019. To calculate the market size, ...
(Date:3/24/2015)... , March 24, 2015   Crossmatch ™, ... today announced that its U.are.U ® 4500 ... Goorin Bros . to achieve PCI compliance ... secures access to the POS terminal, protecting the ... of data breaches. With one-third ...
Breaking Biology News(10 mins):Guidepoint Launches Post-Surgical Pain Management TRACKER 2Guidepoint Launches Post-Surgical Pain Management TRACKER 3Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2
... Bethesda, MD This FASEB Science Research Conference brings ... define how the conformations of cellular proteins are achieved ... aberrant protein conformations arise. Specific sessions ... pathways, the mechanisms of action of molecular chaperones, pathways ...
... JUPITER, FL, January 22, 2013 How aging affects ... that makes it more difficult to treat a range ... A new study from the Florida campus of The ... affects the brain,s neural circuitry, in some cases significantly ...
... accurate information about endangered bats, birds and insects. A new ... revealed many previously unknown and highly valuable details about bats. ... in tents for several days with binoculars and infrared cameras ... system, which for two months has continuously recorded bat activity ...
Cached Biology News:Scripps Florida scientists offer new insight into neuron changes brought about by aging 2New monitoring technique reveals endangered animals 2New monitoring technique reveals endangered animals 3
(Date:4/21/2015)... Immune Pharmaceuticals Inc., or "Immune" (NASDAQ: ... elected Rene-Pierre Azria as a Director and ... oversight on strategic and financial transactions. Mr. Azria will ... Compensation Committee and the Corporate Governance and Nomination Committee. ... have a long-time interest in Life Sciences and in ...
(Date:4/21/2015)... , April 21, 2015  Tute Genomics, a leading ... of Josh Forsythe as VP of Marketing. Mr. ... witnessed a significant expansion in its commercial operations over the ... " Josh Forsythe is a tremendous addition ... MD MBA, CEO of Tute Genomics. "Josh,s vast experience commercializing ...
(Date:4/21/2015)... Limited (ASX:NRT; NASDAQ: NVGN ) ("Company" or "Novogen"), ... entered into definitive agreements today to issue approximately ... 6-month option and half of one attaching 5-year ... investors in the United States ... proceeds of approximately AU$15,500,000 ("Placement"). The closing of ...
(Date:4/21/2015)... SILVER SPRING, Md. and RESEARCH ... -- United Therapeutics Corporation (NASDAQ: UTHR ) announced ... financial results before market open on Tuesday, April 28, ... teleconference on Tuesday, April 28, 2015, at 9:00 a.m. ... with international callers dialing 1-970-315-0533.  A rebroadcast of the ...
Breaking Biology Technology:Immune Board Elects Rene-Pierre Azria A Director And Chair Of The Transaction Committee 2Immune Board Elects Rene-Pierre Azria A Director And Chair Of The Transaction Committee 3Immune Board Elects Rene-Pierre Azria A Director And Chair Of The Transaction Committee 4Tute Genomics Continues Expansion of Genomic Medicine Commercial Operations; Appoints Josh Forsythe as New VP of Marketing 2Tute Genomics Continues Expansion of Genomic Medicine Commercial Operations; Appoints Josh Forsythe as New VP of Marketing 3Tute Genomics Continues Expansion of Genomic Medicine Commercial Operations; Appoints Josh Forsythe as New VP of Marketing 4Novogen Conducts Private Placement and Announces Rights Offering to Shareholders 2Novogen Conducts Private Placement and Announces Rights Offering to Shareholders 3Novogen Conducts Private Placement and Announces Rights Offering to Shareholders 4Novogen Conducts Private Placement and Announces Rights Offering to Shareholders 5Novogen Conducts Private Placement and Announces Rights Offering to Shareholders 6
... , , MENLO ... California-based partners hosted the California Bioscience Business Roundtable (BBR) event at ... featured Sam Youngman, the White Correspondent for The Hill newspaper, who ... debate in Washington, D.C. , , Bioscience represents ...
... , , The statement below is from Pete ... Company, its employees and its Board of Directors. , , ... across a remarkably broad spectrum of issues. Foremost among them was his ... , , He was a tireless advocate for patients, rights ...
... 11%, - Strong Research and Investment Effort, - Positive net Financial Position, - Annual ... Saporta approved the 2009 half year financial statements: , , In million Euros ... ... Sales 87.0 ...
Cached Biology Technology:California Life Science, Business, and Economic Development Experts Discuss California's Bioscience Future 2Boston Scientific Statement on the Passing of Senator Edward Kennedy 2STALLERGENES: 1st Half-Year 2009: Performance Ahead of Expectations 2STALLERGENES: 1st Half-Year 2009: Performance Ahead of Expectations 3STALLERGENES: 1st Half-Year 2009: Performance Ahead of Expectations 4
Mouse monoclonal antibody to QPCT - glutaminyl-peptide cyclotransferase (glutaminyl cyclase)...
... MSY2/YBOX2 ( Abpromise for all ... Synthetic peptide derived from a ... human YBX2. (Note: the exact ... Entrez Gene ...
Rabbit polyclonal to YANK2 ( Abpromise for all tested applications). Antigen: A KLH conjugated synthetic peptide selected within aa 300~400 (C terminal region) of human YANK2. Entrez Gene ID:...
Certified by the Biological Stain Commission. For staining fresh peripheral blood smears and blood parasites....
Biology Products: