Journal
JOURNAL OF NEUROPHYSIOLOGY
Volume 98, Issue 3, Pages 1415-1427Publisher
AMER PHYSIOLOGICAL SOC
DOI: 10.1152/jn.00238.2007
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Funding
- NEI NIH HHS [R01 EY014030, R01-EY-14030, R01 EY014030-03] Funding Source: Medline
- NIMH NIH HHS [R01 MH069880-03, R01-MH69880, R01 MH069880] Funding Source: Medline
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When observing a particular movement a subset of movement-selective visual and visuomotor neurons are active in the observer's brain, forming a representation of the observed movement. Similarly, when executing a movement a subset of movement-selective motor and visuomotor neurons are active, forming a representation of the executed movement. In this study we used an fMRI-adaptation protocol to assess cortical response selectivity to observed and executed movements simultaneously. Subjects freely played the rock-paper-scissors game against a videotaped opponent, sometimes repeatedly observing or executing the same movement on subsequent trials. Numerous brain areas exhibited adaptation ( repetition suppression) during either repeated observations or repeated executions of the same movement. A subset of areas exhibited an overlap of both effects, containing neurons with selective responses for both executed and observed movements. We describe the function of these movement representation areas in the context of the human mirror system, which is expected to respond selectively to both observed and executed movements.
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