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:10/17/2014)... German . Why ... order to reproduce? And why are there two sexes anyway? ... issue of the research journal Molecular Human Reproduction ... from Bielefeld University Bielefeld has compiled this special issue on ... female to copulate with several males in quick succession – ...
(Date:10/16/2014)... wages war on the human body. Battles are ... In pancreatic cancer, this stalemate—known as tumor dormancy—can ... malignant, a phenomena that is poorly understood. ... laboratory of Salvatore Torquato, a Professor of Chemistry ... surrounding tumor dormancy and the switch to a ...
(Date:10/16/2014)... thinking on how the bowel lining develops and, in ... cancer starts. , The researchers produced evidence that stem ... that are a feature of the bowel lining, and ... development, a controversial finding as scientists are still divided ... technologies, Dr Chin Wee Tan and Professor Tony Burgess ...
Breaking Biology News(10 mins):Sperm wars 2Modeling tumor dormancy 2Cryptic clues drive new theory of bowel cancer development 2
... WI, NOVEMBER 9, 2009 -- Agricultural soils accumulate ... of their presence in wastes (sewage biosolids and manures) ... time. Regulations and guidelines for tolerable concentrations of these ... assumption that the toxic effects of the metals are ...
... The drug Sprycel, approved for use by the ... myeloid leukemia, significantly inhibited the growth and invasiveness of ... study by researchers with UCLA,s Jonsson Comprehensive Cancer Center ... regimen, was even more effective in fighting ovarian cancer ...
... and elsewhere provide support for the use of marine ... marine habitats, according to biologists at the University of ... the Gulf of California, for example, confirmed the validity ... offspring produced in a protected area can replenish the ...
Cached Biology News:Additive copper-zinc interaction affects toxic response in soybean 2FDA approved leukemia drugs shows promise in ovarian cancer cells 2Studies show marine reserves can be an effective tool for managing fisheries 2Studies show marine reserves can be an effective tool for managing fisheries 3Studies show marine reserves can be an effective tool for managing fisheries 4Studies show marine reserves can be an effective tool for managing fisheries 5
(Date:10/20/2014)... Oct. 20, 2014 PureTech , a ... big healthcare problems, announced today the closing of ... participation from Invesco Perpetual, a $120 Billion group ... drive PureTech,s existing pipeline forward and to advance ... the scientific creativity to really go for the ...
(Date:10/19/2014)... 20, 2014 OCTOBER 20-22, ... (ABIM). ABIM will take place at ... about ABIM 2014 is now available at ... representing companies and organizations from all over ... information on the latest products and developments ...
(Date:10/19/2014)... 19, 2014 The report "Chocolate, Cocoa ... Trade, Prices, Geography Trend and Forecast (2011 - 2016)," ... and geography and studies the major market drivers, restraints, ... Europe, and Asia. , The global chocolate market is ... billion in 2016 at an estimated CAGR of 2.7% ...
(Date:10/18/2014)... 2014 The Asia-Pacific Bio-based Advanced ... the bio-based advanced phase change material market in ... Browse through the TOC of the Asia-Pacific Bio-based ... an idea of the in-depth analysis provided. This ... the Asia-Pacific bio-based advanced phase change material market, ...
Breaking Biology Technology:PureTech Announces Expansion with Oversubscribed $55M Funding Round 2PureTech Announces Expansion with Oversubscribed $55M Funding Round 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 5PureTech Announces Expansion with Oversubscribed $55M Funding Round 6Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 2Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 4The Asia-Pacific Bio-based Advanced Phase Change Materials Market is estimated to grow to $39.8 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bio-based Advanced Phase Change Materials Market is estimated to grow to $39.8 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Bio-based Advanced Phase Change Materials Market is estimated to grow to $39.8 million by 2018 - New Report by MicroMarket Monitor 4
... , October 1999 , , Molecular ... to detect specific nucleic acids in homogeneous solutions. 1 ... in a hairpin shape because of thecomplementary arms at ... Thestrained loop portion contains the nucleotide that is complementary ...
... , ... INTRODUCTION , Modern assays for ... Enzyme selectivity is obtained by choosing a peptide sequence uniquely ... chromophore or fluorophore is attached near the peptides cleavage site ...
... , , , ... STEPS , , EASY SINGLE-STEP ASSAY ... , , FATTY ACID UPTAKE AND TRANSPORTERS , ... cellular,processes including mitochondria oxidation,membrane synthesis and energy storage.,Pathologically increased intracellular fatty ...
Cached Biology Technology:Measurement of Molecular Beacons in the SpectraMax Gemini Spectrofluorometer (MaxLine Application Note #36) 2Measurement of Molecular Beacons in the SpectraMax Gemini Spectrofluorometer (MaxLine Application Note #36) 3Measurement of Molecular Beacons in the SpectraMax Gemini Spectrofluorometer (MaxLine Application Note #36) 4Fluorometric Protease Assays in the SpectraMax Gemini Microplate Spectrofluorometer: Example Using Caspase3 (MaxLine Application Note #35) 2Fluorometric Protease Assays in the SpectraMax Gemini Microplate Spectrofluorometer: Example Using Caspase3 (MaxLine Application Note #35) 3Fluorometric Protease Assays in the SpectraMax Gemini Microplate Spectrofluorometer: Example Using Caspase3 (MaxLine Application Note #35) 4Fluorometric Protease Assays in the SpectraMax Gemini Microplate Spectrofluorometer: Example Using Caspase3 (MaxLine Application Note #35) 5Fluorometric Protease Assays in the SpectraMax Gemini Microplate Spectrofluorometer: Example Using Caspase3 (MaxLine Application Note #35) 6QBT Fatty Acid Uptake Assay Kit datasheet 2QBT Fatty Acid Uptake Assay Kit datasheet 3
...
DTT 50 l...
...
Chicken polyclonal to YebU ( Abpromise for all tested applications). Antigen: Synthetic peptide, corresponding to amino acids 196-244 of E. coli YebU....
Biology Products: