Cerebral Cortex Advance Access published online on October 28, 2004
Cerebral Cortex, doi:10.1093/cercor/bhh199
© 2004 by Oxford University Press
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1 Ahmanson-Lovelace Brain Mapping Center, 660 Charles Young Dr. South, Los Angeles, CA 90095, USA; FPR-UCLA Center for Culture, Brain and Development, Los Angeles, CA, USA; Brain Research Institute, David Geffen School of Medicine at University of California, Los Angeles, CA, USA
* To whom correspondence should be addressed. Recent neuroimaging studies have suggested that the inferior frontal gyrus (IFG) is important for action observation and imitation. In order to further explore the role of IFG in action observation and imitation, we pooled data from seven functional magnetic resonance imaging studies involving observation and imitation of simple finger movements performed in our laboratory. For imitation we found two peaks of activation in the pars opercularis, one in its dorsal sector and the other in its ventral sector. The dorsal sector of the pars opercularis was also activated during action observation, whereas the ventral sector was not. In addition, the pars triangularis was activated during action observation but not during imitation. This large dataset suggests a functional parcellation of the IFG that we discuss in terms of human mirror areas and the computational motor control architecture of internal models.
Article
Functional Segregation within Pars Opercularis of the Inferior Frontal Gyrus: Evidence from fMRI Studies of Imitation and Action Observation
2 Ahmanson-Lovelace Brain Mapping Center, 660 Charles Young Dr. South, Los Angeles, CA 90095, USA; FPR-UCLA Center for Culture, Brain and Development, Los Angeles, CA, USA; Brain Research Institute, David Geffen School of Medicine at University of California, Los Angeles, CA, USA; Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at University of California, Los Angeles, CA, USA; Neuropsychiatric Institute, David Geffen School of Medicine at University of California, Los Angeles, CA, USA
3 Ahmanson-Lovelace Brain Mapping Center, 660 Charles Young Dr. South, Los Angeles, CA 90095, USA; Department of Neurology, David Geffen School of Medicine at University of California, Los Angeles, CA, USA
4 Ahmanson-Lovelace Brain Mapping Center, 660 Charles Young Dr. South, Los Angeles, CA 90095, USA; Brain Research Institute, David Geffen School of Medicine at University of California, Los Angeles, CA, USA; Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at University of California, Los Angeles, CA, USA; Neuropsychiatric Institute, David Geffen School of Medicine at University of California, Los Angeles, CA, USA; Department of Neurology, David Geffen School of Medicine at University of California, Los Angeles, CA, USA; Department of Pharmacology, David Geffen School of Medicine at University of California, Los Angeles, CA, USA; Department of Radiological Sciences, David Geffen School of Medicine at University of California, Los Angeles, CA, USA
Istvan Molnar-Szakacs, E-mail: imolnar{at}ucla.edu
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