Navigation Links
Using brain scans, researchers find evidence for a two-stage model of human perceptual learning

Using advanced brain imaging techniques, researchers at Georgetown University Medical Center have watched how humans use both lower and higher brain processes to learn novel tasks, an advance they say may help speed up the teaching of new skills as well as offer strategies to retrain people with perceptual deficits due to autism.

In the March 15 issue of Neuron, the research team provides the first human evidence for a two-stage model of how a person learns to place objects into categories ?discerning, for example, that a green apple, and not a green tennis ball, belongs to "food." They describe it as a complex interplay between neurons that process stimulus shape ("bottom-up") and more sophisticated brain areas that discriminate between these shapes to categorize and "label" that information ("top-down").

A human can't function without the ability to sort between objects and organize them in fluid ways, said the study's lead author, Maximilian Riesenhuber, Ph.D., the principal investigator for the Laboratory for Computational Cognitive Neuroscience. "We make sense of the world by learning to recognize objects as members of categories such as 'food,' 'friend,' or 'foe,' but it has not been clear how the human brain does this," he said.

The researchers theorized that a very simple yet efficient way of doing this kind of learning would be for the brain to first learn how objects vary in shape, and then, in a second stage, to learn which shapes go with which labels, allowing the brain to sort an object into different labeled "bins" when necessary. For example, a green apple and a green tennis ball are both green and round, but only an apple can be eaten and only a green tennis ball belongs to a sport.

In this study, the research team asked human volunteers to undertake a series of tasks presented to them on a computer screen. All of them involved cars that were generated with a computer graphics morphing system, allowing
'"/>

Source:Georgetown University Medical Center


Page: 1 2 3

Related biology news :

1. Research Using Mouse Models Reveals A Novel Key Player In The Initiation Of Colon Cancer
2. Rush Physicians Using Gene Therapy For Heart Patients With Moderate To Severe Chest Pains Who Do Not Benefit From Other Treatments
3. Researchers Closer To Helping Hearing-Impaired Using Stem Cells
4. Using nanoparticles, in vivo gene therapy activates brain stem cells
5. Using computers and DNA to count bacteria
6. Using the genomic shortcut to predict bacterial behavior
7. Using natures most primitive anti-viral defense system to find new approaches to cancer research
8. Using dental X-rays to detect osteoporosis
9. Using nanomagnets to enhance medical imaging
10. Controversial drug shown to act on brain protein to cut alcohol use
11. Mouse brain cells rapidly recover after Alzheimers plaques are cleared
Post Your Comments:
(Date:5/20/2013)... effect of physical education (PE) on child weight, but ... the amount of time that elementary schoolchildren spent in ... study represents some of the first evidence of a ... forthcoming in the Journal of Health Economics . ... be viewed at: http://www.sciencedirect.com/science/article/pii/S0167629613000556 , The research ...
(Date:5/20/2013)... grant will help establish the Center for Advanced Research ... of Illinois at Urbana-Champaign and Worcester Polytechnic Institute (WPI) ... research in drying moist, porous materials such as food ... products; textiles; and biopharmaceuticals," said Hao Feng, a U ... and the Illinois site director. , According to Feng, ...
(Date:5/20/2013)... Geology articles posted online ahead of print ... swath of geoscience subdisciplines, including minerals exploration, archaeology, ... studied include Siberia; the Sumatran subduction margin; the ... Mars; and the Southeastern U.S. Atlantic Margin. Brief ... plate tectonics;, 2. The clear fingerprint of ice ...
Breaking Biology News(10 mins):Gym class reduces probability of obesity, study finds for first time 2NSF approves planning grant for Center for Advanced Research in Drying 2New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 2New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 3New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 4New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 5New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 6New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 7New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 8New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 9New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 10New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 11
... Ala. The newest generation of compact research freezers ... the scientific capacity of the International Space Station (ISS), ... (UAB). A UAB-designed cryogenic freezer called GLACIER, short ... its NASA debut in late 2008 aboard a shuttle ...
... the latest American Chemical Society (ACS) Weekly ... It has news from ACS, 34 peer-reviewed ... .,Please credit the individual journal or the ... this information. PressPac Archive: http://portal.acs.org/portal/acs/corg/content?_nfpb=true&_pageLabel=PP_ARTICLEMAIN&node_id=223&content_id=CTP_006742&use_sec=true&sec_url_var=region1 ...
... a new approach to prevent bacterial infections from taking ... , Dr Quinn Parks and colleagues describe how they ... cells to prevent Pseudomonas aeruginosa bacteria from ... both the body,s immune mechanisms and antibiotics. When ...
Cached Biology News:American Chemical Society's weekly PressPac -- March 11, 2009 2American Chemical Society's weekly PressPac -- March 11, 2009 3American Chemical Society's weekly PressPac -- March 11, 2009 4American Chemical Society's weekly PressPac -- March 11, 2009 5American Chemical Society's weekly PressPac -- March 11, 2009 6
(Date:5/20/2013)... LOS ANGELES , May 20, 2013 ... San Francisco , James ... of Clinical Psychiatry at the Semel Institute for Neuroscience ... of Medicine at the University of California ... in both Child and Adolescent Psychopharmacology and ADHD at ...
(Date:5/20/2013)... , May 20, 2013 Pacific Biomarkers and Clinigene ... for developers of biosimilars at the 2013 AAPS/ ... San Diego Hotel and Marina , ... have the opportunity to speak with company representatives at ... That Cross" on May 21 from 1-2 p.m. in ...
(Date:5/20/2013)... HILL, N.C. , May 20, 2013 /PRNewswire/ ... company focused on developing differentiated antibiotics to meet ... infections, today announced that it presented data at ... in Philadelphia demonstrating the ... levofloxacin in Cempra,s prior Phase 2 clinical trial ...
(Date:5/20/2013)... May 20, 2013 Interventional cardiologist Tony ... General Hospital (AGH) Cardiovascular Institute have helped pioneer ... artery disease (CAD) over the past three decades, ... balloon angioplasty and coronary artery stent implantation. , Today, ... play a prominent role in the study of a ...
Breaking Biology Technology:Positive Results Reported for Phase I Clinical Trial at UCLA for the Treatment of ADHD in Children Using External Trigeminal Nerve Stimulation (eTNS) 2Positive Results Reported for Phase I Clinical Trial at UCLA for the Treatment of ADHD in Children Using External Trigeminal Nerve Stimulation (eTNS) 3Positive Results Reported for Phase I Clinical Trial at UCLA for the Treatment of ADHD in Children Using External Trigeminal Nerve Stimulation (eTNS) 4Positive Results Reported for Phase I Clinical Trial at UCLA for the Treatment of ADHD in Children Using External Trigeminal Nerve Stimulation (eTNS) 5Pacific Biomarkers and Clinigene International To Announce Laboratory Solutions for Developers of Biosimilars at 2013 AAPS/ National Biotechnology Conference 2Cempra Presents Post-Phase 2 Analysis of Solithromycin's Efficacy and Safety Results from Patients with Community Acquired Bacterial Pneumonia (CABP) 2Allegheny General Hospital Cardiovascular Institute Becomes Exclusive Pittsburgh Site for Study of Novel Coronary Artery Disease Device 2Allegheny General Hospital Cardiovascular Institute Becomes Exclusive Pittsburgh Site for Study of Novel Coronary Artery Disease Device 3Allegheny General Hospital Cardiovascular Institute Becomes Exclusive Pittsburgh Site for Study of Novel Coronary Artery Disease Device 4
... global provider of enterprise information quality solutions, and ... solutions company based in Connecticut, have verbally agreed not ... 15, concluding Pitney's planned acquisition of Firstlogic. , ,The ... a review of a Second Request for Information issued ...
... Health and Human Services Tommy Thompson has been elected to ... of information systems for high-acuity care areas of a hospital, ... intensive care unit. , ,Thompson began his career in public ... He was elected assistant Assembly minority leader in 1973 and ...
... Wisconsin company specializing in functional Magnetic Resonance Imaging ... the 2005 edition of the Minnies, awarded by ... and related professionals in medical imaging. , ,This ... categories. AuntMinnie.com members voted Neurognostics one of the ...
Cached Biology Technology:
Mouse monoclonal antibody raised against a partial recombinant CENTB2. NCBI Entrez Gene ID = CENTB2...
Mouse monoclonal antibody raised against a partial recombinant STAU2. NCBI Entrez Gene ID = STAU2...
...
Mouse polyclonal antibody to NR2F2 - nuclear receptor subfamily 2, group F, member 2...
Biology Products: