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:5/6/2016)... ... May 06, 2016 , ... Kenneth Cochran, DSc, RN, FACHE, ... of the South announced today that Dr. Robert Menuet, Interventional Cardiologist with Cardiovascular ... Ultrasound Guided Coronary Atherectomy. , This procedure involves the removal of ...
(Date:5/5/2016)... ... May 05, 2016 , ... TransWipe Volume 3 is ... X. Drag and drop a TransWipe preset between two video clips to instantly add ... wipes to colored panels with customizable color and orientation options. TransWipe Volume 3 is ...
(Date:5/5/2016)... ... 2016 , ... Qrono Inc. , a specialty pharmaceutical ... with the Australian critical medicine company, Phebra Pty Ltd. , to develop ... can offer improved therapeutic benefits over oral formulations, including better bioavailability, improved adherence, ...
(Date:5/5/2016)... ... May 05, 2016 , ... Einstein Medical is proud ... cover the latest news and commentary at the 2016 ASCRS/ASOA Symposium and Congress, which ... American Society of Cataract and Refractive Surgery and the American Society of Ophthalmic Administrations ...
(Date:5/5/2016)... ... ... weekend, from Friday, May 6 - Sunday, May 8, fifteen elite athletes from Team ... Fi Mountain Bike Camp, hosted in conjunction with WTB and Cannondale ... Moeschler, who’ll share pro tips with the injured veterans as they rip down some of ...
Breaking Medicine News(10 mins):
(Date:5/5/2016)... Research and Markets has ... Market and Competitive Landscape Highlights - 2016" ... (Logo: http://photos.prnewswire.com/prnh/20160330/349511LOGO ) The ... Landscape Highlights - 2016, provides comprehensive insights ... market valuations and forecast, Thalassaemia products sales ...
(Date:5/4/2016)...  Compass Diversified Holdings (NYSE: CODI ) ... leading middle market businesses, announced today its consolidated operating ... First Quarter 2016 Highlights , Generated ... "Cash Flow") of $13.6 million for the first quarter ... million for the first quarter of 2016; , ...
(Date:5/4/2016)... time for an upgrade. There are many medical recorders on the market but none ... DVMAXX HD  offers unparalleled connectivity and functionality.  Ampronix  is a renowned authorized reseller ... innovative technology.  Photo - http://photos.prnewswire.com/prnh/20160503/363416 ... ... ...
Breaking Medicine Technology: