TY - JOUR
T1 - Extrastriate body area in human occipital cortex responds to the performance of motor actions
AU - Astafiev, Serguei V.
AU - Stanley, Christine M.
AU - Shulman, Gordon L.
AU - Corbetta, Maurizio
N1 - Funding Information:
This research was supported by grants from National Institutes of Health (EY00379, EY001248, 5P50NS06833). We thank A. Snyder and M. McAvoy for image analysis and statistical advice; and C. Lewis, T. Phan, F. Miezin and M. Cowan for technical support. We also thank P. Downing and N. Kanwisher for providing the photographs of human body parts and object parts.
PY - 2004/5
Y1 - 2004/5
N2 - A region in human lateral occipital cortex (the 'extrastriate body area' or EBA) has been implicated in the perception of body parts. Here we report functional magnetic resonance imaging (fMRI) evidence that the EBA is strongly modulated by limb (arm, foot) movements to a visual target stimulus, even in the absence of visual feedback from the movement. Therefore, the EBA responds not only during the perception of other people's body parts, but also during goal-directed movements of the observer's body parts. In addition, both limb movements and saccades to a detected stimulus produced stronger signals than stimulus detection without motor movements ('covert detection') in the calcarine sulcus and lingual gyrus. These motor-related modulations cannot be explained by simple visual or attentional factors related to the target stimulus, and suggest a potentially widespread influence of actions on visual cortex.
AB - A region in human lateral occipital cortex (the 'extrastriate body area' or EBA) has been implicated in the perception of body parts. Here we report functional magnetic resonance imaging (fMRI) evidence that the EBA is strongly modulated by limb (arm, foot) movements to a visual target stimulus, even in the absence of visual feedback from the movement. Therefore, the EBA responds not only during the perception of other people's body parts, but also during goal-directed movements of the observer's body parts. In addition, both limb movements and saccades to a detected stimulus produced stronger signals than stimulus detection without motor movements ('covert detection') in the calcarine sulcus and lingual gyrus. These motor-related modulations cannot be explained by simple visual or attentional factors related to the target stimulus, and suggest a potentially widespread influence of actions on visual cortex.
UR - http://www.scopus.com/inward/record.url?scp=2142700026&partnerID=8YFLogxK
U2 - 10.1038/nn1241
DO - 10.1038/nn1241
M3 - Article
C2 - 15107859
AN - SCOPUS:2142700026
SN - 1097-6256
VL - 7
SP - 542
EP - 548
JO - Nature neuroscience
JF - Nature neuroscience
IS - 5
ER -