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Updated: Jul 10, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Spatial compatibility between stimulated eye and response location.

Fernando Valle-Inclán1, Felix Sohn, Milagros Redondo

  • 1Department of Psychology, University of La Coruña, La Coruña, Spain. fval@udc.es

Psychophysiology
|November 1, 2007
PubMed
Summary

Spatial compatibility effects from eye-of-origin information influence response selection tonically, not transiently. This suggests monocular information processing occurs outside the visual cortex, even without attention movements.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Visual Perception

Background:

  • Eye-of-origin information is traditionally thought to be processed solely within the visual cortex.
  • Spatial compatibility effects, where response speed depends on the relationship between stimulus and response locations, are well-documented in vision.

Purpose of the Study:

  • To investigate if the spatial compatibility effect observed with monocular stimuli shares characteristics with the established visual Simon effect.
  • To determine the temporal dynamics and neural underpinnings of eye-of-origin based spatial coding.

Main Methods:

  • Participants responded to monocular visual stimuli.
  • Reaction times were analyzed across the entire distribution.
  • Electrophysiological measures were used to detect response activation patterns.

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Related Experiment Videos

Last Updated: Jul 10, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

Using Eye Movements Recorded in the Visual World Paradigm to Explore the Online Processing of Spoken Language
09:27

Using Eye Movements Recorded in the Visual World Paradigm to Explore the Online Processing of Spoken Language

Published on: October 13, 2018

Efficiently Recording the Eye-Hand Coordination to Incoordination Spectrum
07:30

Efficiently Recording the Eye-Hand Coordination to Incoordination Spectrum

Published on: March 21, 2019

Main Results:

  • A spatial compatibility effect was observed: reactions were faster for ipsilateral (compatible) than contralateral (incompatible) eye-of-origin stimuli.
  • The magnitude of this compatibility effect remained constant across the entire reaction time distribution.
  • No electrophysiological evidence for incorrect response activation was found.

Conclusions:

  • Eye-of-origin information exerts a tonic, rather than transient, influence on response selection.
  • Monocular visual information can influence cognitive processes outside the primary visual cortex.
  • Spatial coding based on eye-of-origin can occur independently of attentional shifts.