Navigation Links
Brain's timing linked with timescales of the natural visual world
Date:9/5/2007

Researchers have long attempted to unravel the cryptic code used by the neurons of the brain to represent our visual world. By studying the way the brain rapidly and precisely encodes natural visual events that occur on a slower timescale, a team of Harvard bioengineers and brain scientists from the State University of New York have moved one step closer towards solving this riddle. The findings were reported in a September 6th Nature article.

Visual perception is limited by the relatively slow way in which the neurons in our eyes integrate light. This is why, for example, a Hollywood movie consisting of a series of flickering images appears to us as seamless motion, explains Garrett Stanley, Associate Professor of Biomedical Engineering at the Harvard School of Engineering and Applied Sciences. However, when the brain responds to some kind of visual event, such as a ball bouncing, the activity of the neurons responsible for sending information can be precise down to the millisecond, despite the fact that the motion of the ball is much slower.

To determine why the brain might encode visual information with such precision, the researchers relied on data obtained by directly recording neuronal activity in animals while they viewed natural scene movies. Doing so enabled Garrett and his colleagues to pinpoint the pattern of neuronal firings in cells that respond to form and motion.

Their analysis of the data suggests that the brains timescale depends on the nature of the visual stimulus. In other words, the precise timing of the neurons (i.e. their internal clock) changes relative to the timescale of the visual scene. For example, a faster bouncing ball results in more precise brain activity than a slower one. In each case, however, the precision of the neurons activity was several times that of the speed of the bouncing ball.

It turns out that the extreme precision of the brains neural response to visual stimuli is, paradoxicall
'/>"/>

Contact: Michael Patrick Rutter
mrutter@seas.harvard.edu
617-496-3815
Harvard University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Bird Brains Show How Trial and Error May Contribute to Learning
2. Birds brains reveal source of songs
3. Supercomputers to focus brains on AIDS dilemma
4. Mice brains shrink during winter, impairing some learning and memory
5. Bees, Brains and Addiction
6. Divergent life history shapes gene expression in brains of salmon
7. Jumping genes contribute to the uniqueness of individual brains
8. Experts discuss use of human stem cells in ape and monkey brains
9. Brains response to visual stimuli helps us to focus on what we should see, rather than all there is to see
10. Sharp older brains are not the same as younger brains
11. Brainstem blocks pain to protect key behaviors
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/19/2014)... 2014  23andMe, Inc., the leading personal genetics company, ... fine-scale differences in genetic ancestry of individuals from across ... Since immigrants first arrived more than four hundred years ... served as a meeting place for peoples from different ... ongoing mixing of peoples with African, European, and American ...
(Date:12/17/2014)... 15, 2014 Research and Markets ... the "Samsung Galaxy S5 - Home Button ... their offering. http://photos.prnewswire.com/prnh/20130307/600769 ... sensing technology than the iPhone 5S, Samsung introduces ... its product. The Galaxy S5 home ...
(Date:12/17/2014)... NEW YORK , Dec. 15, 2014 /PRNewswire-USNewswire/ ... a Good Clinical Practices (GCP) audit to confirm ... Administration (FDA) regulations. This accomplishment enables HITLAB to ... trials utilizing the highest principles for patient safety ... to improve global healthcare access, quality, and delivery ...
Breaking Biology News(10 mins):23andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2
... Medicine have enhanced our understanding of the mechanism by ... food is converted into the energy required by cells. ... how organisms synthesize their major form of chemical energy. ... of PLoS Biology . Cells use the ...
... Mont. -- Researchers at Montana State University have ... for treating antibiotic resistant infections, fungal infections and viral ... to study such compounds. The technologies are ... The first technology involves an existing clinical drug ...
... YORK and LEON, GUANAJUATO MEXICO, Aug. 18 Global ... and identity management market, announced today that it will ... Leon, Guanajuato, Mexico. Portoss, a Leon-based company, specializes in ... latest partnership between Portoss and the City of Leon ...
Cached Biology News:Mount Sinai researchers discover new mechanism behind cellular energy conversion 2Montana State University offers 6 new biomedical technologies for licensing 2Montana State University offers 6 new biomedical technologies for licensing 3Montana State University offers 6 new biomedical technologies for licensing 4Global Rainmakers Delivers World Class Iris Capability for Portoss 2Global Rainmakers Delivers World Class Iris Capability for Portoss 3
(Date:12/24/2014)... GMO corn cases filed across the ... in the process of being consolidated in a Kansas ... In Re: Syngenta AG MIR 162 Corn Litigation, MDL ... District of Kansas. , Management of the Syngenta GMO ... U.S. District Judge John W. Lungstrum.* , As a ...
(Date:12/24/2014)... According to Ross Selinger, President of ... Global, the national office market continues to be strong, driven ... evidenced by the third quarter’s surprising 3.9% GDP, unemployment decreasing ... costs have held inflation down and the Fed is keeping ... market remaining soft. , This solid economic news is having ...
(Date:12/24/2014)... Pipette.com announces their Holiday in the ... their #HolidayInTheLab pictures for a chance to win pipette-themed ... those struggling to think of a holiday gift for ... Lab Contest provides the ideal holiday presents. The #HolidayInTheLab ... pictures of their chemistree, holiday sweaters, as well as ...
(Date:12/24/2014)... , Dec. 23, 2014 Sigma-Aldrich Corporation ... the waiting period under the Hart-Scott-Rodino Antitrust Improvements ... expired on December 22, 2014, thereby completing the ... for the acquisition of the Company by Merck ... clearance satisfies another condition to closing the transaction, ...
Breaking Biology Technology:Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2ITRA Global Reports Long Island Is Out of Sync With The National Office Market 2ITRA Global Reports Long Island Is Out of Sync With The National Office Market 3Major Pipette Distributor Pipette.com Announces their Holiday in the Lab Contest 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 3
... Colo., Oct. 9 Replidyne, Inc.,(Nasdaq: RDYN ) ... and,webcast on Tuesday, October 30, 2007 at 4:45 P.M. ... in the conference call by,dialing 800-435-1261 (domestic) or 617-614-4076 ... the conference call will be available approximately one,hour after ...
... of Clinical Programs, PALO ALTO, Calif., Oct. ... a late-stage biotechnology company that,develops central nervous system ... be a presenting company at the 4th,Annual BIO ... at the,Palace Hotel of San Francisco. The company,s ...
... Oct. 8 Inverness Medical,Innovations (Amex: IMA ) ... Agreement with Panbio Ltd, an Australian company traded on,the ... will acquire all of the issued shares in Panbio ... values the issued share capital of,Panbio at approximately AUD ...
Cached Biology Technology:Replidyne to Announce Third Quarter 2007 Earnings 2Avicena to Present at 4th Annual BIO InvestorForum Conference 2Inverness Medical Innovations Agrees to Acquire Panbio Ltd. 2
... is a base medium for preparation of minimal ... sulfate but does not contain amino acids. Both ... Each pouch contains reagents to prepare 500 ml ... ml of 10X YNB for S. cerevisiae media. ...
... of the family of human cullin genes (CUL-1, -2, ... cerevisiae cdc53 gene. Cullin-3 is proposed to be a ... complex with cyclin E and targets it for ubiquitination, ... is an activator of cdk2, which leads the cell ...
Imject Freund's Incomplete Adjuvant (FIA)...
With sodium bicarbonate. Sterile, Cell culture tested...
Biology Products: