Our Eyes Seek New Targets While Searching for Something

by VR Sreeraman on  April 18, 2009 at 12:42 PM Research News
RSS Email Print This Page Comment
Font : A-A+

 Our Eyes Seek New Targets While Searching for Something
People's attention does not return time and again to the objects they have already seen while searching for something, but they tend to shift their eyes to previously fixated locations when performing other visual tasks, according to a study.

Psychologists Michael D. Dodd from the University of Nebraska - Lincoln, Stefan Van der Stigchel of Utrecht University, and Andrew Hollingworth from the University of Iowa tracked eye movements of volunteers as they viewed various scenes, and recorded the location where the eyes were focused at each moment.

The volunteers were divided into four groups, with each group receiving different instructions for scene viewing.

They were told to search the scenes for a specific target, memorize each scene, rate how pleasant the scenes were, or free-view the scenes.

A target appeared in the scene during viewing, and the participants shifted their eyes as quickly as possible to the target. The target either appeared in an old location or a new location.

The researchers observed that the participants' attention was less likely to return to objects they had already viewed during visual search tasks, but not during other visual tasks.

They said that the volunteers in the search group were slower to shift their eyes to previously fixated locations than to new locations.

However, the subjects in the other three groups exhibited the opposite pattern of eye movements: they were faster to shift their eyes to previously fixated locations than to new locations.

Based on their observations, the researchers came to the conclusion that the "facilitation of return" effect might be "the default setting of the visual system, with inhibition of return representing an exception implemented during visual search."

The study has been reported in the journal Psychological Science.

Source: ANI
SRM

Post a Comment

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.
* Your comment can be maximum of 2500 characters
Notify me when reply is posted
I agree to the terms and conditions

More News on:

Nervous Tic Vision LASIK Surgery Facts Allergy Eye Drops Routine Eye Examination Quiz On Eye Donation Floppy Iris Syndrome Eyelid Bump 

News A - Z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

News Search

Medindia Newsletters

Subscribe to our Free Newsletters!

Terms & Conditions and Privacy Policy.

Stay Connected

  • Available on the Android Market
  • Available on the App Store

Facebook

News Category

News Archive