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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
The inverse intensity effect is not lost with stimuli in apparent motion
E Castet1, J Lorenceau, C Bonnet
1Laboratoire de Psychologie Expérimentale, Université René Descartes, Paris, France.
Vision Research
|August 1, 1993
Summary
Visible persistence, the duration a stimulus remains perceived, shortens with higher intensity in apparent motion. Lowering background luminance and increasing spatial separation also extend this visual persistence effect.
Area of Science:
- Visual Perception
- Neuroscience
Background:
- The inverse relationship between stimulus intensity and visible persistence is known for static displays.
- This relationship is less understood for non-static, apparent motion displays.
Purpose of the Study:
- To investigate how luminance affects visible persistence in apparent motion.
- To determine if stimulus luminance can systematically alter mean persistence duration.
Main Methods:
- Studied visible persistence of a stimulus in apparent motion.
- Varied stimulus luminance while keeping temporal intervals constant.
- Assessed persistence duration as a normally distributed random variable.
Main Results:
- The inverse intensity effect was observed at each location of the apparent motion stimulus.
- Increasing spatial separation between stimulus presentations increased persistence duration.
- Decreasing background luminance also resulted in longer persistence duration.
Conclusions:
- Visible persistence in apparent motion is inversely related to stimulus intensity.
- Findings support the hypothesis of active suppression of persistence via inhibitory neural interactions.
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