ERIC Number: EJ729781
Record Type: Journal
Publication Date: 2006-Feb
The Relative Importance of Spatial Versus Temporal Structure in the Perception of Biological Motion: An Event-Related Potential Study
Hirai, Masahiro; Hiraki, Kazuo
Cognition, v99 n1 pB15-B29 Feb 2006
We investigated how the spatiotemporal structure of animations of biological motion (BM) affects brain activity. We measured event-related potentials (ERPs) during the perception of BM under four conditions: normal spatial and temporal structure; scrambled spatial and normal temporal structure; normal spatial and scrambled temporal structure; and scrambled spatial and temporal structure. As in a previous study, we identified two negative components at both occipitotemporal regions: N210 reflected general motion processing while N280 reflected the processing of BM. We analyzed the averaged ERPs in the 200-300ms response time window and found that spatial structure had a substantial effect on the magnitude of the averaged response amplitude in both hemispheres. This finding suggests that spatial structure of point-lights elicits a stronger response in the occipitotemporal region than temporal structure for the BM perception.
Descriptors: Motion, Perception, Cognitive Processes, Reaction Time, Brain Hemisphere Functions, Spatial Ability, Time Perspective, Brain
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
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