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Participants performed movements with the right hand to text instructions in a rapid event related design with a pseudo\u2010random stimulus order. Brain areas associated with action retrieval were identified by comparing trials where an action was repeated to trials that involved a new action. Performance of a novel action, collapsed across individual actions, resulted in significantly greater activity in a left hemisphere predominant fronto\u2010parietal circuit involving inferior frontal gyrus and inferior parietal cortex (supramarginal gyrus). This is consistent with previous action retrieval tasks using go, no\u2010go paradigms and lesion studies of patients with apraxia that emphasize a role of these areas in action organization. In addition, RS effects were present in left primary sensorimotor cortex. These effects cannot be ascribed to kinematic differences, simple action related activity or differences of cognitive set. Significant RS effects for action retrieval could be identified with as little as 5 min of fMRI data and underscores the potential of using RS to characterize representational structure within the motor system. Hum Brain Mapp, 2009. \u00a9 2008 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/hbm.20717","type":"journal-article","created":{"date-parts":[[2009,1,2]],"date-time":"2009-01-02T05:19:03Z","timestamp":1230873543000},"page":"2898-2906","source":"Crossref","is-referenced-by-count":47,"title":["Repetition suppression for performed hand gestures revealed by fMRI"],"prefix":"10.1002","volume":"30","author":[{"given":"Antonia F.","family":"de C. 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