Journal
NEUROREPORT
Volume 15, Issue 13, Pages 2019-2023Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/00001756-200409150-00005
Keywords
action observation; cytoarchitectonic area 2; functional magnetic resonance imaging; human; kinesthesia; limb movement; vision
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Does viewing someone's actions activate a viewer's somatosensory cortex? We tested if visual information of limb movements activated limb sections in somatosensory areas that are normally engaged in kinesthetic processing of the limb. We showed, with functional magnetic resonance imaging in 17 right-handed healthy subjects, that passive observation of flexion-extension movements of an experimenter's right hand activated the observer's contralateral hand section of area 2 which is involved in kinesthetic processing of right hand movements. This could be interpreted as a pragmatic function of the brain that permits visual information to reach the somatosersory area, and suggests human area 2 has an association function between kinesthesia and vision.
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