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Cognitive effects on visually induced body motion in children
J C Lepecq1, I Giannopulu, P M Baudonniere
1Unité de Psychophysiologie Cognitive, URA CNRS 654, Hôpital de la Salpétrière, Paris, France.
Perception
|January 1, 1995
Summary
Cognitive beliefs about movement did not change whether children experienced vection, but knowing movement was possible shortened their reaction times. This suggests cognitive factors influence vection reporting speed, not occurrence.
Area of Science:
- Developmental psychology
- Perceptual psychology
- Cognitive neuroscience
Background:
- Vection, the illusory sensation of self-motion, is influenced by visual stimuli.
- Understanding cognitive influences on vection in children is crucial for developmental research.
Purpose of the Study:
- To investigate the impact of cognitive expectations on linear sagittal vection in children.
- To determine if beliefs about physical movement alter vection occurrence or latency.
Main Methods:
- Forty children (7 and 11 years old) experienced backward optical flow in a stationary armchair.
- Two cognitive conditions were used: belief in possible armchair movement vs. impossible movement.
- Latency for reporting vection was measured in each condition.
Main Results:
- The probability of experiencing vection was unaffected by the cognitive manipulation.
- Children reported vection faster when they believed movement was possible.
- This effect was observed in both age groups.
Conclusions:
- Cognitive factors alone do not determine vection occurrence in children.
- Beliefs about potential physical displacement can modulate the speed of reporting vection.
- Future research should explore the interplay between cognitive set and sensory perception.