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Mirroring Communicative Actions: Contextual Modulation of Mu Rhythm Desynchronization in Response to the ‘Back-Of-Hand’ Action in 9-Month-Old Infants

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<mark>Journal publication date</mark>3/04/2022
<mark>Journal</mark>Developmental Neuropsychology
Issue number3
Number of pages17
Pages (from-to)158-174
Publication StatusPublished
Early online date23/03/22
<mark>Original language</mark>English


This study measured mu rhythm desynchronization (MRD), while nine-month-old infants observed an agent extend her arm and hand, palm up (‘back-of-hand action’) either in social (object and recipient present), individual (object present, recipient absent), or social object-absent (recipient present, object absent) situations across two experiments. In addition, infants’ MRD was measured as they reached for objects. Results revealed significant mu desynchronization in the right centro-parietal region selectively for the social group, indicating that infants processed the back-of-hand action as an object-directed request. Findings suggest to extend the action reconstruction account to object-directed communicative actions as well.