Navigation Links
Perceptual learning relies on local motion signals to learn global motion
Date:9/21/2009

Rockville, MD Researchers have long known of the brain's ability to learn based on visual motion input, and a recent study has uncovered more insight into where the learning occurs.

The brain first perceives changes in visual input (local motion) in the primary visual cortex. The local motion signals are then integrated in the later visual processing stages and interpreted as global motion in the higher-level processes.

But when subjects in a recent experiment using moving dots were asked to detect global motion (the overall direction of the dots moving together), the results show that their learning relied on more local motion processes (the movement of dots in small areas) than global motion areas.

"We had expected that higher-level processing could be more involved in task-relevant perceptual learning investigated in this study," said Dr. Shigeaki Nishina who conducted the research in Boston University and now belongs to the Honda Research Institute Japan. "Contrary to the expectation, the result suggested local motion signals are predominantly used for task-relevant perceptual learning of global motion, which was surprising to us."

Nishina said the results, which appear in the latest issue of Journal of Vision (http://www.journalofvision.org/9/9/15/) show that the improvement in detection of global motion is not due to learning of the global motion but to learning of local motion of the moving dots in the test.

The researchers said the study of perceptual learning can give scientists deeper insight not only about sensory systems but also the whole brain's adaptable nature.

"This line of study could give a guideline for optimizing human machine interface," said Nishina. "When we use a new machine, we need to learn how to get information from the machine. In our study, local motion signals were more important for the brain to learn a task based on global motion. This suggests that the optimal information for efficient learning could be different from the visual information that is directly related to the task to be learned."

In addition, Nishina said the new understanding of where the brain processes task-relevant perceptual learning can lead to further understanding of how a brain makes decisions based on sensory input.

"We expect that our results will help the understanding of decision-making process and constructing a more concrete model of the process," he said.


'/>"/>

Contact: Jessie Williams
jwilliams@arvo.org
240-221-2924
Association for Research in Vision and Ophthalmology
Source:Eurekalert

Related medicine news :

1. EdOptions(TM) Offers Schools Affordable Solution to Ensure Continuity of Learning
2. Back to School - Dramatic Medical Help and Hope for the Learning Disabled
3. Computers Might Make Learning Lip Reading Easier
4. Learning how to cope with burn injuries
5. Chicago Mayor Honors Astellas Excellence in Learning, Development
6. No Link Found Between Birth Anesthesia and Learning Issues
7. Veracord Delivers FDA Expertise with SyberWorks Latest Learning Management Solution
8. Learning Takes Place When You Get Things Right
9. URAC Launches New eLearning Courses for Health Care Management Accreditation
10. Career Step Partners with Computer Learning Center to Help Students Gain Careers in Growing Healthcare Industry
11. Nation Takes a Big Step Toward Learning Which Medical Treatments Work Best, a Major Advance in Fixing Our Broken Health-Care System
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/22/2017)... ... August 22, 2017 , ... The Women’s Choice Award, a growing platform ... with the 2017 Women’s Choice Award. The identification by women of an effective ... 4 migraine sufferers are women. In a survey taken by the Women’s Choice Award ...
(Date:8/22/2017)... , ... August 22, 2017 , ... Each of the past six years, Lightning Labels ... pictures of these labels and stickers, demonstrating the variety and creativity of their designs. Submissions ... label images came in. Now, it's time to announce the winners of the sixth annual ...
(Date:8/22/2017)... ... August 22, 2017 , ... “To Walk Away”: ... a B17 bomber named Edward Koontz. “To Walk Away” is the creation of published ... has published over two hundred manuscripts in chemistry and religion, as well as four ...
(Date:8/22/2017)... (PRWEB) , ... August 22, 2017 , ... “Glimpses Of ... understanding of the world. “Glimpses Of Light” is the creation of published author, J.M. ... life in search of answers to life’s perplexing mysteries. , Shepherd shares, “Love is ...
(Date:8/22/2017)... , ... August 22, 2017 , ... Although Labor Day ... July, many communities have begun providing weekend displays, and numerous households celebrate the unofficial ... they can be downright terrifying for pets. , Kris Zambo, owner of ...
Breaking Medicine News(10 mins):
(Date:8/17/2017)... Bio-Ess Laboratories, LLC Chief Science Officer, Dr. Adam Elhofy , will ... Cell-Ess® Universal Titer Boost at the 9 th annual ... 21-25.  The Bioprocessing Summit convenes more than 1,000 international bioprocess professionals to ... ... Cell-Ess is the ...
(Date:8/15/2017)... Diplomat Pharmacy, Inc. (NYSE: DPLO), is now ... residents. Naloxone is available without a ... pharmacy, G-3320 Beecher Road. ... Administration, is intended to block or reverse the effects ... of consciousness. The medication is often carried by first ...
(Date:8/15/2017)... , Aug. 15, 2017 AccuGenomics, Inc., ... , today announced that the company has provided ... University of North Carolina at Chapel Hill and to ... designed to characterize and quantify HIV reservoir and viral ... pharmacological intervention. The HIV Cure Center is a joint ...
Breaking Medicine Technology: