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Social Cognitive and Affective Neuroscience Advance Access published online on September 12, 2006
Social Cognitive and Affective Neuroscience, doi:10.1093/scan/nsl017
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© The Author (2006). Published by Oxford University Press. For Permissions, please email: journals.permissions@oxfordjournals.org
Received March 27, 2006
Accepted July 26, 2006

Original Papers

Modulation of the mirror system by social relevance

James M. Kilner 1 *, Jennifer L. Marchant 1, and Chris D. Frith 1

1 The Wellcome Department of Imaging Neuroscience, Queen Square, London WC1N 3BG, UK

* To whom correspondence should be addressed.
James M. Kilner, E-mail: j.kilner{at}fil.ion.ucl.ac.uk


  Abstract

When we observe the actions of others, certain areas of the brain are activated in a similar manner as to when we perform the same actions ourselves. This ‘mirror system’ includes areas in the ventral premotor cortex and the inferior parietal lobule. Experimental studies suggest that action observation automatically elicits activity in the observer, which precisely mirrors the activity observed. In this case we would expect this activity to be independent of observer's viewpoint. Here we use whole-head magnetoencephalography (MEG) to record cortical activity of human subjects whilst they watched a series of videos of an actor making a movement recorded from different viewpoints. We show that one cortical response to action observation (oscillatory activity in the 7-12 Hz frequency range) is modulated by the relationship between the observer and the actor. We suggest that this modulation reflects a mechanism that filters information into the ‘mirror system’, allowing only socially relevant information to pass.

Keywords: mirror neuron; action observation; social; MEG; oscillations.
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