Navigation Links
1 region, 2 functions: Brain cells' multitasking key to understanding overall brain function
Date:3/6/2013

rchers can decode the information conveyed by the neurons' activity.

"The activity patterns in these parietal neurons carry strong information about the category that each motion pattern gets assigned to during the task," Freedman said.

Over the years, his team's work on categorization has zeroed in on the lateral intraparietal (LIP) area. Studies have shown that this area is vital to directing spatial attention and eye movements. But it had been unclear how an area involved in spatial attention and eye movements could also play a role in non-spatial functions such as visual categorization.

To compare spatial and category functions in the parietal lobe, Freedman and his team added a twist to the monkeys' task. During the category task, the researchers required the subjects to make eye-movements to visual cues at various positions on the computer screen, but the subjects still had to categorize the visual patterns at the same time that they made these eye movements.

Since this parietal brain area is known to be involved in eye movements, the eye movements could have disrupted category information in that part of the brain. Instead, parietal brain cells showed a simultaneous and independent encoding of both eye-movement and category informationmultiplexing of information at the level of single brain cells.

"These signals rode right on top of the eye-movement signals," said the study's first author, Chris Rishel, PhD, a recent graduate from Freedman's laboratory. "We could decode both the eye-movement and the category signals with high accuracy. This tells us that different kinds of information that are usually considered quite unrelated were simultaneously and independently represented by neurons in this particular brain area."

Their results, the study authors note, "support the possibility that LIP plays a key role in transforming visual signals in earlier sensory areas into abstract category signals during cat
'/>"/>

Contact: John Easton
John.Easton@uchospitals.edu
773-795-5225
University of Chicago Medical Center
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Brain adds cells in puberty to navigate adult world
2. Adding to the list of disease-causing proteins in brain disorders
3. Rain Man-like brains mapped at UCSF
4. CETS offers new method to help simplify the study of brain pathologies
5. Brown unveils novel wireless brain sensor
6. Ability of brain to protect itself from damage revealed
7. Activation of cortical type 2 cannabinoid receptors ameliorates ischemic brain injury
8. Engineering control theory helps create dynamic brain models
9. New study shows how seals sleep with only half their brain at a time
10. Shedding new light on infant brain development
11. Brain prostheses create a sense of touch
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/21/2014)... 2014The story of cowpea (black-eyed peas) is a fascinating ... problemseven more fascinating is the story of the scientist ... The Food Legume of the 21st Century to serve ... use. The book was recently published by the Crop ... of Tropical Agriculture (IITA). , Singh has devoted his ...
(Date:9/21/2014)... recent years, new strains of bacteria have emerged that ... superbugs, including drug-resistant forms of tuberculosis and staphylococcus, infect ... least 23,000. Despite the urgent need for new treatments, ... in the past decade. , MIT engineers have now ... a gene-editing system that can disable any target gene, ...
(Date:9/21/2014)... team of Stanford researchers has developed a protein therapy ... break away from original tumor sites, travel through the ... the body. , This process, known as metastasis, can ... "The majority of patients who succumb to cancer fall ... Cochran, an associate professor of bioengineering who describes a ...
Breaking Biology News(10 mins):Battling superbugs 2Battling superbugs 3Battling superbugs 4Stanford researchers create 'evolved' protein that may stop cancer from spreading 2Stanford researchers create 'evolved' protein that may stop cancer from spreading 3Stanford researchers create 'evolved' protein that may stop cancer from spreading 4
... Md. -- Later this week, the American Society of Plant ... plant science to chart the future of the field. The ... the broad plant science research community in a process that ... science research over the next decade. The summit will ...
... A University of Alberta research team has turned their ... and hopes to expand its use. U ... students produced a 3-D imaging system called Virtual Reflected-Light ... a light source, a platform that moves the objects ...
... woodland creatures, including woodlice, millipedes and worms, can help ... according to new research from Cardiff University. Huge ... compete with each other for space and resources and, ... woodland floor have the potential to govern the outcome ...
Cached Biology News:ASPB convenes leaders to chart future of plant science research 2Peacekeeping creatures help maintain woodland diversity 2
(Date:9/22/2014)... TORONTO , Sept. 22, 2014 ... announced that it has entered into a collaboration ... UHN,s Centre for Molecular Design and Preformulations (CMDP) ... The goal of the project is to increase ... proprietary buccal insulin spray product, thereby reducing the ...
(Date:9/22/2014)... 2014 METTLER TOLEDO is pleased ... measuring device CNS110 ScanTape™ . Replacing a ... offering greater ease and accuracy for transport and ... significantly enhance productivity—an important benefit for load planning ... equals profits. , Usable at any point ...
(Date:9/21/2014)... Chemical Sciences play a significant ... clean air and safe water, healthy food, and ... environmentalists, food scientists, educators, and scientists have a ... field of Chemistry for the national development, and ... of the fastest emerging Sciences, accelerating with a ...
(Date:9/19/2014)... is rarely simple. From crop yields to disease risks, ... those considered "complex traits." Just as for heightthe textbook ... particular human disease are shaped by multiple genetic and ... involved. To track down such genes, geneticists typically mate ... large mouse and a small mouseand then study their ...
Breaking Biology Technology:Generex Collaborates with University Health Network for Buccal Insulin Project 2Generex Collaborates with University Health Network for Buccal Insulin Project 3Generex Collaborates with University Health Network for Buccal Insulin Project 4ScanTape™ Handheld Dimensioner Increases Processing Volume 2Chemistry for Global Development during the Open Access Week 2Chemistry for Global Development during the Open Access Week 3Want to link genes to complex traits? Start with more diversity 2
... 4 ARCA Discovery Inc., a privately held,biopharmaceutical ... other cardiovascular diseases, today announced Richard B.,Brewer, President ... 26th,Annual JPMorgan Healthcare Conference on Tuesday, January 8 ... Conference will be held January 7-10, 2008 at,the ...
... REYKJAVIK, Iceland, Jan. 4 deCODE genetics,(Nasdaq: DCGN ... webcast of deCODE,CEO Kari Stefansson,s presentation at the JPMorgan ... at 11:30 am PST / 7:30 pm GMT on,Thursday, ... California.,The webcast can be accessed through the Investors page ...
... FRANCISCO, Calif., Jan. 4 Cerimon,Pharmaceuticals, Inc. announced ... Counsel, a newly established position, and Vice President ... global life sciences,executive and corporate attorney with broad ... in the US and,Europe. In the business development ...
Cached Biology Technology:ARCA Discovery, Inc. to Present at 26th Annual JPMorgan Healthcare Conference on January 8, 2008 2Cerimon Pharmaceuticals Names Matthew J. Meyer its General Counsel and Vice President of Business Development and Licensing 2
... dispenser combining the most versatile features for bulk ... existing Multidrop dispensers. , ,It is designed ... nl up to 2500 l with excellent precision ... for multiple plate formats (96, 384, 1536) including ...
... Multidrop Combi is a new generation bulk ... flexibility and simplicity for pharmaceutical and biotech ... reliable Multidrop range, Multidrop Combi has been ... volumes of 0.5-2500 l and multiple plate ...
Multidrop DW is a high-speed automated dispenser for Deep Well plates, 1.1 ml test tubes and 96-well plates. Designed for accuracy and precision, the Multidrop DW dispenses up to eight different reag...
Buckets for 2 racks of 5 tubes, type Stago/Hitachi...
Biology Products: