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Related Experiment Video

Updated: Nov 22, 2025

Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing
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Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing

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Apparent Motion Is Computed in Perceptual Coordinates.

Jiahan Hui1, Yue Wang, Peng Zhang2

  • 1Department of Psychological and Brain Sciences, Dartmouth College, Hanover, New Hampshire, United States; State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.

I-Perception
|January 6, 2021
PubMed
Summary
This summary is machine-generated.

Apparent motion in the visual periphery is computed using perceived, not physical, locations of stimuli. This finding suggests visual motion processing occurs in perceptual, not retinotopic, coordinates.

Keywords:
apparent motiondouble-drift stimulusmotion-induced position shiftperceptual coordinates

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Area of Science:

  • Visual perception
  • Neuroscience
  • Computational vision

Background:

  • Double-drift stimuli create a discrepancy between physical and perceived motion direction.
  • Previous research indicates saccades target physical locations for immediate responses and perceived locations for delayed responses.

Purpose of the Study:

  • To determine if apparent motion from double-drift stimuli originates from perceived or physical locations.
  • To investigate the coordinate system used for apparent motion computation.

Main Methods:

  • Experimentally presenting double-drift stimuli with varying temporal delays before a target probe.
  • Analyzing the origin of apparent motion based on observer responses.

Main Results:

  • Apparent motion consistently originated from the perceived position of the double-drift stimulus, regardless of temporal delay.
  • This effect was observed across all tested temporal delays.

Conclusions:

  • Apparent motion is computed based on the perceived location of stimuli.
  • Visual motion processing, including apparent motion, is likely performed in perceptual reference frames, not purely retinotopic ones.