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Prefrontal involvement in imitation learning of hand actions : effects of practice and expertise.

Research output: Contribution to journalJournal article

Published

  • Stefan Vogt
  • Giovanni Buccino
  • Afra M. Wohlschläger
  • Nicola Canessa
  • N. Jon Shah
  • Karl Zilles
  • Simon B. Eickhoff
  • Hans-Joachim Freund
  • Giacomo Rizzolatti
  • Gereon R. Fink
Journal publication date01/2007
JournalNeuroImage
Journal number4
Volume37
Number of pages13
Pages1371-1383
Original languageEnglish

Abstract

In this event-related fMRI study, we demonstrate the effects of a single session of practising configural hand actions (guitar chords) on cortical activations during observation, motor preparation, and imitative execution. During the observation of non-practised actions, the mirror neuron system (MNS), consisting of inferior parietal and ventral premotor areas, was more strongly activated than for the practised actions. This finding indicates a strong role of the MNS in the early stages of imitation learning. In addition, the dorsolateral prefrontal cortex (DLPFC) was selectively involved during observation and motor preparation of the non-practised chords. This finding confirms Buccino et al.’s (2004a) model of imitation learning: for actions that are not yet part of the observer’s motor repertoire, DLPFC engages in operations of selection and combination of existing, elementary representations in the MNS. The pattern of prefrontal activations further supports Shallice’s (2004) proposal of a dominant role of the left DLPFC in modulating lower-level systems, and of a dominant role of the right DLPFC in monitoring operations.

Bibliographic note

The final, definitive version of this article has been published in the Journal, NeuroImage 37 (4), 2007, © ELSEVIER.