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Action-induced changes in the perceived temporal features of visual events
1Department of Psychology, Bogazici University, Istanbul, Turkey; Cognitive Science Program, Bogazici University, Istanbul, Turkey.
Vision Research
|July 6, 2020
Summary
Voluntary actions shorten perceived visual duration, suggesting a generalized mechanism rather than effector-specific control. This effect is linked to motion processing but distinct from perceived speed changes.
Area of Science:
- Cognitive Neuroscience
- Visual Perception
- Action-Time Perception
Background:
- Perceived duration is altered by voluntary actions.
- The underlying mechanisms (effector-specific vs. generalized) remain unclear.
Purpose of the Study:
- Investigate if action-induced visual duration effects are effector-specific or generalized.
- Determine the relationship between action, visual stimuli, and temporal perception.
Main Methods:
- Dynamic visual stimuli were presented contingent on voluntary manual responses (keypress).
- Compared perceived duration in action-response vs. passive observation conditions.
- Conducted control experiments varying attention, motor memory, stimulus properties (isoluminant, static).
Main Results:
- Action-associated intervals were perceived as shorter than in passive viewing.
- Motor memory and attention did not explain these duration changes.
- Duration compression vanished with isoluminant or static stimuli, unlike perceived speed changes.
Conclusions:
- Action-induced duration compression suggests a generalized, multimodal calibration mechanism.
- The effect is linked to motion processing but mediated by distinct neural pathways from perceived speed.
- Evidence supports modulation within motion-processing units, not effector-specific control.
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