Featured Research

from universities, journals, and other organizations

Perceptual Learning Relies On Local Motion Signals To Learn Global Motion

Date:
September 30, 2009
Source:
Association for Research in Vision and Ophthalmology
Summary:
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.

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.

Related Articles


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, 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.


Story Source:

The above story is based on materials provided by Association for Research in Vision and Ophthalmology. Note: Materials may be edited for content and length.


Journal Reference:

  1. Shigeaki Nishina, Mitsuo Kawato, Takeo Watanabe. Perceptual learning of global pattern motion occurs on the basis of local motion. Journal of Vision, 2009; [link]

Cite This Page:

Association for Research in Vision and Ophthalmology. "Perceptual Learning Relies On Local Motion Signals To Learn Global Motion." ScienceDaily. ScienceDaily, 30 September 2009. <www.sciencedaily.com/releases/2009/09/090921134836.htm>.
Association for Research in Vision and Ophthalmology. (2009, September 30). Perceptual Learning Relies On Local Motion Signals To Learn Global Motion. ScienceDaily. Retrieved January 30, 2015 from www.sciencedaily.com/releases/2009/09/090921134836.htm
Association for Research in Vision and Ophthalmology. "Perceptual Learning Relies On Local Motion Signals To Learn Global Motion." ScienceDaily. www.sciencedaily.com/releases/2009/09/090921134836.htm (accessed January 30, 2015).

Share This


More From ScienceDaily



More Mind & Brain News

Friday, January 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Binge-Watching TV Linked To Loneliness

Binge-Watching TV Linked To Loneliness

Newsy (Jan. 29, 2015) Researchers at University of Texas at Austin found a link between binge-watching TV shows and feelings of loneliness and depression. Video provided by Newsy
Powered by NewsLook.com
Signs You Might Be The Passive Aggressive Friend

Signs You Might Be The Passive Aggressive Friend

BuzzFeed (Jan. 28, 2015) "No, I&apos;m not mad. Why, are you mad?" Video provided by BuzzFeed
Powered by NewsLook.com
City Divided: A Look at Model Schools in the TDSB

City Divided: A Look at Model Schools in the TDSB

The Toronto Star (Jan. 27, 2015) Model schools are rethinking how they engage with the community to help enhance the lives of the students and their parents. Video provided by The Toronto Star
Powered by NewsLook.com
Man Saves Pennies For 65 Years

Man Saves Pennies For 65 Years

Rooftop Comedy (Jan. 26, 2015) A man in Texas saved every penny he found for 65 years, and this week he finally cashed them in. Bank tellers at Prosperity Bank in Slaton, Texas were shocked when Ira Keys arrived at their bank with over 500 pounds of loose pennies stored in coffee cans. After more than an hour of sorting and counting, it turned out the 81 year-old was in possession of 81,600 pennies, or $816. And he&apos;s got more at home! Video provided by Rooftop Comedy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins