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Binocular interaction and performance of visual tasks.

Authors
  • Justo, Maria S
  • Bermudez, Maria A
  • Perez, Rogelio
  • Gonzalez, Francisco
Type
Published Article
Journal
Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)
Publication Date
Mar 01, 2004
Volume
24
Issue
2
Pages
82–90
Identifiers
PMID: 15005672
Source
Medline
License
Unknown

Abstract

Binocular vision implies the fusion of the right and left retinal images to perceive a single image. For this, interocular interaction is required. We measured the reaction times to carry out a visual fixation task in order to determine whether binocular interaction influences performance. Several combinations of test and distraction stimuli were monocularly and binocularly presented to one monkey and three human subjects. The overall median reaction times were 340 ms for the animal and 308, 342 and 381 for human subjects 1, 2 and 3 respectively. Reaction time was shorter when the test stimulus was presented binocularly. Moreover, we observed that the presence of a distraction stimulus increased the reaction time and that a correlated distraction stimulus had a greater influence on this increase than an uncorrelated distraction stimulus. These findings indicate that with binocular vision a more rapid performance of a visual task occurs.

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