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Visible persistence and form correspondence in Ternus apparent motion.

P Kramer1, M Rudd

  • 1Johns Hopkins University, Baltimore, Maryland, USA. pkramer@casema.net

Perception & Psychophysics
|September 28, 1999
PubMed
Summary
This summary is machine-generated.

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Visible persistence, the lingering of visual stimuli, does not explain motion perception in the Ternus display. Experiments show element motion occurs even without visible persistence, and group motion can occur with it.

Area of Science:

  • Cognitive Psychology
  • Visual Perception

Background:

  • Visible persistence is the continued perception of a visual stimulus after it has been removed.
  • It has been theorized to influence perceptual organization in motion perception tasks like the Ternus display.

Purpose of the Study:

  • To investigate the role of visible persistence in the Ternus apparent-motion display.
  • To test the hypothesis that visible persistence dictates whether element motion or group motion is perceived.

Main Methods:

  • Four experiments were conducted using the Ternus display.
  • Visible persistence was manipulated (reduced or eliminated) while form correspondence cues were introduced.
  • Ternus elements were presented without interruption to assess group motion perception.

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Main Results:

  • Element motion perception persisted even when visible persistence was eliminated.
  • Group motion perception was observed even when elements presumably persisted over time.
  • These findings challenge the visible-persistence account of Ternus display organization.

Conclusions:

  • Visible persistence is neither necessary nor sufficient to explain correspondence matching in the Ternus display.
  • Other factors likely mediate the perceptual organization of apparent motion.