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Related Experiment Video

Updated: Apr 26, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
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Motion perception correlates with volitional but not reflexive eye movements.

N S C Price1, J Blum1

  • 1Department of Physiology, Monash University, VIC 3800, Australia.

Neuroscience
|July 30, 2014
PubMed
Summary

Sensory circuits in the brain

Area of Science:

  • Neuroscience
  • Visual Perception
  • Oculomotor Control

Background:

  • Visually-guided actions and perception involve dorsal and ventral visual streams.
  • The dorsal stream is crucial for motion perception and eye movement control.
  • The relationship between neuronal constraints for motion perception and eye movements is unclear.

Purpose of the Study:

  • To investigate whether sensory processing systems for motion direction perception and eye movement control share common neuronal constraints.
  • To examine inter-individual variability in perceptual and oculomotor precision.

Main Methods:

  • Assessed perceptual and oculomotor precision using two tasks: smooth pursuit (volitional) and ocular following (reflexive).
  • Measured direction perception and eye movement precision simultaneously in 36 observers.
Keywords:
directionindividual differencesocular followingperceptionsmooth pursuit

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  • Calculated perceptual-oculomotor correlations across individuals.

    • Main Results:

    • Perceptual precision was correlated between the smooth pursuit and ocular following tasks.
    • Oculomotor precision was also correlated between the two tasks.
    • Perceptual and oculomotor precision correlated for volitional smooth pursuit but not for reflexive ocular following.

    Conclusions:

    • Sensory circuits with shared neuronal constraints underlie motion perception and volitional eye movements.
    • Reflexive eye movements (ocular following) do not share the same neuronal constraints.
    • Common neural substrates link visual motion perception and voluntary oculomotor control.