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Eye dominance modulates visuospatial attention.

S Schintu1, R Chaumillon2, A Guillaume3

  • 1Integrative Multisensory Perception Action & Cognition Team (ImpAct), INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center (CRNL), Lyon, France; University of Lyon 1, Lyon, France; Department of Psychology, George Washington University, WA, USA; Behavioral Neurology Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.

Neuropsychologia
|December 25, 2019
PubMed
Summary
This summary is machine-generated.

Eye dominance influences visuospatial attention, with left-dominant eyed individuals showing less pseudoneglect. This effect was observed in perceptual tasks, highlighting a novel interaction between eye dominance and spatial cognition.

Keywords:
AsymmetryLateralityLine bisectionPseudoneglectVisual cortex

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Vision Science

Background:

  • Visuospatial attention exhibits a leftward bias, known as pseudoneglect, often linked to right hemisphere dominance.
  • Eye dominance influences visual cortex activation, suggesting a potential role in modulating attentional biases.

Purpose of the Study:

  • To investigate whether eye dominance modulates the pseudoneglect phenomenon in right-handed individuals.
  • To explore the differential impact of eye dominance on perceptual versus manual line bisection tasks.

Main Methods:

  • Compared line bisection performance (perceptual and manual) in 40 right-handed individuals.
  • Participants were divided into two groups based on dominant eye: right-dominant and left-dominant.
  • Assessed visuospatial attention bias using the Landmark and manual line bisection tasks.

Main Results:

  • Left-dominant eyed individuals exhibited significantly less pseudoneglect compared to right-dominant eyed individuals.
  • The influence of eye dominance on visuospatial bias was significant in the Landmark task but not the manual line bisection task.
  • In the manual task, visuospatial bias correlated with the degree of right-handedness.

Conclusions:

  • Eye dominance is a significant factor influencing visuospatial attention bias, particularly in perceptual tasks.
  • This finding provides new insights into the neural mechanisms underlying visuospatial cognition and its interaction with sensory input.
  • Further research is warranted to elucidate the neural underpinnings of this eye dominance-visuospatial attention interaction.