Navigation Links
Researchers uncover cellular mechanisms for attention in the brain
Date:7/26/2013

Hanover, N.H.The ability to pay attention to relevant information while ignoring distractions is a core brain function. Without the ability to focus and filter out "noise," we could not effectively interact with our environment. Despite much study of attention in the brain, the cellular mechanisms responsible for the effects of attention have remained a mystery... until now.

In a study appearing in the journal Nature, researchers from Dartmouth's Geisel School of Medicine and the University of California Davis studied communications between synaptically connected neurons under conditions where subjects shifted their attention toward or away from visual stimuli that activated the recorded neurons. Using this highly sensitive measure of attention's influence on neuron-to-neuron communication, they were able to demonstrate that attention operates at the level of the synapse to improve sensitivity to incoming signals, sharpen the precision of these signals, and selectively boost the transmission of attention-grabbing information while reducing the level of noisy or attention-disrupting information.

The results point to a novel mechanism by which attention shapes perception by selectively altering presynaptic weights to highlight sensory features among all the noisy sensory input.

"While our findings are consistent with other reported changes in neuronal firing rates with attention, they go far beyond such descriptions, revealing never-before tested mechanisms at the synaptic level," said study co-author Farran Briggs, PhD, assistant professor of Physiology and Neurobiology at the Geisel School of Medicine.

In addition to expanding our understanding of brain, this study could help people with attention deficits resulting from brain injury or disease, possibly leading to improved screening and new treatments.


'/>"/>

Contact: Derik Hertel
kenneth.d.hertel@dartmouth.edu
603-650-1211
The Geisel School of Medicine at Dartmouth
Source:Eurekalert

Page: 1

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
3. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
4. UNH researchers find African farmers need better climate change data to improve farming practices
5. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
6. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
7. Researchers print live cells with a standard inkjet printer
8. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
9. Researchers reveal how a single gene mutation leads to uncontrolled obesity
10. Researchers discover novel therapy for Crohns disease
11. New paper by Notre Dame researchers describes method for cleaning up nuclear waste
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/30/2014)... 2014  Spectra Automation, a trusted supplier ... and power generation industries, announced today the ... an easy-to-use and cost-effective data collection, analysis ... laboratories. Most upstream process ... systems. Accessing and consolidating data from these ...
(Date:9/29/2014)... Clostridium ramosum , coupled with a high-fat diet, may ... week in mBio , the online open-access journal of ... from the German Institute of Human Nutrition Potsdam-Rehbruecke in Nuthetal ... ramosum gained weight when fed a high-fat diet. Mice ... obese even when consuming a high-fat diet, and mice that ...
(Date:9/29/2014)... "human activities in this area of the world have contributed ... grown for use as a cooking oil and biofuel, while ... the most widely produced edible oil in the world, and ... soybean oil. , The environmental effects of such growth have ... crop, and the preferred method is fire. The clearing often ...
Breaking Biology News(10 mins):Spectra Automation Introduces RECONN Bioprocess Manager 2Gut bacteria promote obesity in mice 2
... food meal is never good for you, but washing that ... a new University of Guelph study. Researcher Marie-Soleil Beaudoin ... levels spike after eating a high-fat meal, but that the ... coffee jumping to levels similar to those of people ...
... leaves influence the sunlight reaching inner canopy leaves by changing ... physiology of leaves within the tree canopy is not constant, ... crown. This phenomenon is expected to have important consequences for ... A new study describes how the leaves in the outer ...
... ARBOR, Mich.Getting older doesn,t mean giving up muscle strength. ... loss that comes with age, but the Golden Years can be ... Michigan Health System. "Resistance exercise is a great ... people can function more readily in daily life," says Mark Peterson, ...
Cached Biology News:Got a craving for fast food? Skip the coffee, study says 2Older and stronger: Progressive resistance training can build muscle, increase strength as we age 2Older and stronger: Progressive resistance training can build muscle, increase strength as we age 3Older and stronger: Progressive resistance training can build muscle, increase strength as we age 4
(Date:10/1/2014)... Slone Partners , a national ... and Laboratory Testing industries, reported a 120% increase in ... level and above from July 2013 to July 2014. ... of rapid breakthroughs in diagnostics, reimbursement has failed to ... been forced to fold, consolidate, or carry on without ...
(Date:10/1/2014)... Industry leaders from retail ... around the theme, ,Commercial Opportunities in the Era of ... Elsevier , a world-leading provider of scientific, ... a gathering of some of the industry,s most prominent ... today and in the future. The Elsevier ...
(Date:9/30/2014)... Using a bio-mimicking analog of one of nature,s ... international research team led by Alejandro Briseno of ... major step in developing long-sought polymer architecture to ... use in electronic devices. , Briseno, with ... others at Stanford University and Dresden University of ...
(Date:9/30/2014)... , Sept. 30, 2014 Nematicide ... kill nematodes. Nematodes are microscopic parasitic roundworms, found ... and inside other plants and animals. Nematicides have ... or other properties promoting migration through the soil. ... than 1,000 plant-parasitic nematodes. With more than 10,000 ...
Breaking Biology Technology:Slone Partners Meets Growing Demand as Industry Focuses on Reimbursement & Regulation 2Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 2Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 3Blades of grass inspire advance in organic solar cells 2Blades of grass inspire advance in organic solar cells 3Nematicides Market by Types (Fumigants, Organophosphates, Carbamate and Bio-Nematicides), Applications (Agrochemicals, Industrial, and Others), and Geography (North America, Europe, Asia-Pacific & ROW) - Global Trends & Forecasts to 2019 2
... Tetrahedral dice, which have four triangular sides, pack ... to research performed by a collaboration of New York ... result of a series of experiments that involved pouring ... dice until the containers were completely filled. After adding ...
... 3 /PRNewswire-FirstCall/ - Angiotech Pharmaceuticals, Inc. ( ANPI, TSX: ANP), a specialty ... exclusive distribution agreement with B. Braun for its proprietary Quill(TM) SRS product line ... The term of the distribution agreement will be for five years. , ... According to The Royal College of Surgeons ...
... , LAWRENCEVILLE, N.J. , May 3 ... (n = 520) multi-center patient registry study of its Lacrisert® ... index (OSDI) in patients with moderate-to-severe dry eye after one ... poster this week during the 2010 Annual Meeting of the ...
Cached Biology Technology:Densest dice packing and computing with molecules 2Angiotech announces exclusive distribution agreement with B. Braun for Angiotech's proprietary Quill(TM) SRS product line 2Angiotech announces exclusive distribution agreement with B. Braun for Angiotech's proprietary Quill(TM) SRS product line 3Angiotech announces exclusive distribution agreement with B. Braun for Angiotech's proprietary Quill(TM) SRS product line 4Angiotech announces exclusive distribution agreement with B. Braun for Angiotech's proprietary Quill(TM) SRS product line 5Study of Lacrisert(R) Dry Eye Insert 2Study of Lacrisert(R) Dry Eye Insert 3Study of Lacrisert(R) Dry Eye Insert 4Study of Lacrisert(R) Dry Eye Insert 5
... scale kinase profiling, quantitative measurement of ... research built on the flexible and ... These microarrays are available as part ... - Peptide Microarray Service. ...
... acid synthetic peptide whose sequences are derived from mouse resistin protein. ... S(21) - S - M - P - L - C ... I - D - K - K - I - K ... be used for neutralization and control experiments with the polyclonal antibody ...
... peptidomimetics built on the flexible and ... These microarrays are available as part ... Service. Custom Probe Content ... specified. Thousands of customer specified peptide ...
... These extended-length microarrays are custom designed to ... configurations are available: 8,455 features per array ... 22,575 features per array (1 array/slide). ... probe length - This extended length ...
Biology Products: