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Related Experiment Videos

The interplay between stereopsis and structure from motion.

M Nawrot1, R Blake

  • 1Department of Psychology, Vanderbilt University, Nashville, TN 37240.

Perception & Psychophysics
|March 1, 1991
PubMed
Summary
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Stereopsis, or depth perception, influences how we see rotating objects. Adapting to a rotating 3D globe changes the perceived rotation of a 2D kinetic depth (KD) display.

Area of Science:

  • Psychophysics
  • Neuroscience
  • Visual Perception

Background:

  • Ambiguous kinetic depth (KD) displays exhibit spontaneous reversals in perceived rotation direction.
  • Perception of rotation in KD displays is influenced by various visual cues.

Purpose of the Study:

  • To investigate the influence of stereopsis on the perception of rotation in ambiguous kinetic depth (KD) displays.
  • To explore the interaction between stereopsis and motion in structure-from-motion perception.

Main Methods:

  • Adaptation paradigm using psychophysical experiments.
  • Viewing stereoscopic globes with unambiguous rotation for adaptation.
  • Testing perception of ambiguous KD displays.

Main Results:

Related Experiment Videos

  • Stereoscopic adaptation to rotation induced an opposite perceived rotation in the KD display.
  • This adaptation aftereffect was retinotopically specific and axis-dependent.
  • Different shapes during adaptation did not negate the effect if retinal disparities were present.
  • Nonstereoscopic adaptation had no effect on KD perception.

Conclusions:

  • Stereopsis and motion perception interact significantly in the construction of 3D structure from motion.
  • These findings complement existing research on structure-from-motion cues.