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Social Cognitive and Affective Neuroscience Advance Access published online on March 26, 2008
Social Cognitive and Affective Neuroscience, doi:10.1093/scan/nsn008
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© The Author (2008). Published by Oxford University Press. For Permissions, please email: journals.permissions@oxfordjournals.org

Human infants dissociate structural and dynamic information in biological motion: evidence from neural systems

Vincent M. Reid1, Stefanie Hoehl2, Jennifer Landt2 and Tricia Striano3

1Department of Psychology, Durham University, Durham DH1 3LE, UK, 2Neurocognition and Development Group, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany, and 3Department of Psychology, Hunter College, New York, USA

This study investigates how human infants process and interpret human movement. Neural correlates to the perception of (i) possible biomechanical motion, (ii) impossible biomechanical motion and (iii) biomechanically possible motion but nonhuman ‘corrupted’ body schema were assessed in infants of 8 months. Analysis of event-related potentials resulting from the passive viewing of these point-light displays (PLDs) indicated a larger positive amplitude over parietal channels between 300 and 700 ms for observing biomechanically impossible PLDs when compared with other conditions. An early negative activation over frontal channels between 200 and 350 ms dissociated schematically impossible PLDs from other conditions. These results show that in infants, different cognitive systems underlie the processing of structural and dynamic features by 8 months of age.

Keywords: infants; Event related potentials; biological motion; body schema; parietal cortex; frontal cortex

Correspondence should be addressed to Vincent Reid, Department of Psychology, Durham University Science Laboratories, South Road, Durham DH1 3LE, UK. E-mail: vincent.reid{at}durham.ac.uk.

Received October 1, 2007. Accepted February 28, 2008.


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