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Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

Visual motion distorts visual and motor space.

Eckart Zimmermann1, Maria Concetta Morrone, David Burr

  • 1Psychology Department, University of Florence, Italy.

Journal of Vision
|February 14, 2012
PubMed
Summary
This summary is machine-generated.

Visual motion distorts spatial perception and eye movements. Saccadic eye movements to visual targets near motion were biased along the motion path, similar to perceptual errors.

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Area of Science:

  • Neuroscience
  • Visual perception
  • Oculomotor research

Background:

  • Visual motion is known to distort spatial position perception.
  • The impact of visual motion on eye movements, specifically saccades, is less understood.

Purpose of the Study:

  • To investigate whether visual motion influences saccadic eye movements.
  • To compare the effects of visual motion on perception and action.

Main Methods:

  • Participants performed saccadic eye movements towards visual targets.
  • Targets were presented near moving visual stimuli.
  • Saccade landing positions and perceptual judgments were recorded.

Main Results:

  • Saccade landing positions were systematically biased in the direction of visual motion.
  • Maximum targeting errors for both saccades and perception occurred at motion onset.
  • The magnitude of errors was similar for both perceptual reports and eye movements.

Conclusions:

  • Visual motion significantly distorts saccadic eye movement accuracy.
  • A shared spatial representation is likely affected by visual motion for both perception and visuomotor control.
  • These findings suggest a unified mechanism for spatial processing in vision.