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:3/24/2017)... ... March 24, 2017 , ... ... soil, dredged material, and hazardous and non-hazardous materials announced today the acquisition of ... This acquisition will add four additional processing facilities and a vast array of ...
(Date:3/24/2017)... , ... March 24, 2017 , ... ... third world countries to hospitals in the United States, it’s a threat that ... the current obstacles facing infection prevention and offers strategies for the healthcare community ...
(Date:3/24/2017)... ... March 24, 2017 , ... According to a new study by ... it does not obey the rules Congress has directed the CBO to follow. The ... GOP reform would restore. Yet, it estimates a reduction in employer-based coverage due to ...
(Date:3/24/2017)... Lake Orion, MI (PRWEB) , ... March 24, ... ... providing insurance assistance, financial planning, and related services to families and business owners ... charity initiative aimed at feeding regional families struggling with financial difficulties. , The ...
(Date:3/24/2017)... ... March 24, 2017 , ... As ... to create a communications platform that positions them as the go-to thought leader ... reinvented their online publication as an always-on, always-fresh news, views and advocacy engine, ...
Breaking Medicine News(10 mins):
(Date:3/24/2017)... -- HealthMine surveys with 9,250 insured consumers fielded from February ... want help from their plans in five key areas: ... 2) help closing gaps in care, 3) better digital ... relevant, real-time guidance. Meeting these needs is essential to ... A Reason to Stay Engaged in Health ...
(Date:3/23/2017)... Mar 23, 2017 Research and Markets has ... Trends - Industry Forecast to 2025" report to their offering. ... The Global ... 6.9% over the next decade to reach approximately $3.5 billion by ... forecasts for all the given segments on global as well as ...
(Date:3/23/2017)... March 23, 2017 ... created through extensive primary research (inputs from industry ... aims to present the analysis of global heart ... (Replacement and Repair); Replacement Procedure By Technique (Mechanical, ... Technique (Surgical Devices, Balloon Valvuloplasty, Transcatheter Mitral Valve ...
Breaking Medicine Technology: