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Estimating heading during eye movements

C S Royden1, J A Crowell, M S Banks

  • 1School of Optometry, University of California, Berkeley 94720.

Vision Research
|December 1, 1994
PubMed
Summary
This summary is machine-generated.

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Judgments of heading during eye movements are more accurate with executed movements. This suggests that extra-retinal eye-velocity signals are crucial for accurately perceiving self-motion.

Area of Science:

  • Visual perception
  • Neuroscience
  • Human factors

Background:

  • Heading perception is vital for navigation and self-motion understanding.
  • The role of retinal and extra-retinal information in heading judgments remains debated.

Purpose of the Study:

  • To investigate the contribution of extra-retinal eye-velocity signals to heading perception.
  • To compare heading judgment accuracy between executed and simulated eye movements.

Main Methods:

  • Eight experiments were conducted comparing heading judgments during executed versus simulated eye movements.
  • Participants tracked visual stimuli while their eye movements were either performed naturally or simulated.

Main Results:

  • Heading judgments were significantly more accurate during executed eye movements.

Related Experiment Videos

  • Simulated eye movements led to misperceptions of self-motion as curvilinear translation.
  • Accurate judgments during simulated movements occurred at low eye velocities (≤1 deg/sec) or with a visible horizon cue.

    • Conclusions:

    • Extra-retinal eye-velocity signals play a significant role in determining heading under various viewing conditions.
    • Retinal image information alone is often insufficient for accurate heading perception during active eye movements.