Parallel Visual Motion Processing Streams for Manipulable Objects and Human Movements

We tested the hypothesis that different regions of lateral temporal cortex are specialized for processing different types of visual motion by studying the cortical responses to moving gratings and to humans and manipulable objects (tools and utensils) that were either stationary or moving with natur...

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Bibliographic Details
Published in:Neuron (Cambridge, Mass.) Mass.), 2002-03, Vol.34 (1), p.149-159
Main Authors: Beauchamp, Michael S., Lee, Kathryn E., Haxby, James V., Martin, Alex
Format: Article
Language:English
Subjects:
Brain Mapping - methods
Experiments
Female
Household Articles
Humans
Hypotheses
Linear Models
Male
Motion Perception - physiology
Movement - physiology
Photic Stimulation - methods
Reaction Time - physiology
Temporal Lobe - physiology
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Summary:We tested the hypothesis that different regions of lateral temporal cortex are specialized for processing different types of visual motion by studying the cortical responses to moving gratings and to humans and manipulable objects (tools and utensils) that were either stationary or moving with natural or artificially generated motions. Segregated responses to human and tool stimuli were observed in both ventral and lateral regions of posterior temporal cortex. Relative to ventral cortex, lateral temporal cortex showed a larger response for moving compared with static humans and tools. Superior temporal cortex preferred human motion, and middle temporal gyrus preferred tool motion. A greater response was observed in STS to articulated compared with unarticulated human motion. Specificity for different types of complex motion (in combination with visual form) may be an organizing principle in lateral temporal cortex.
ISSN:0896-6273
1097-4199
DOI:10.1016/S0896-6273(02)00642-6