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N1 responses to images of hands in occipito-temporal event-related potentials

Espírito Santo, Miguel Granja; Maxim, Octavian Sorin; Schürmann, Martin

Authors

Miguel Granja Espírito Santo

Octavian Sorin Maxim

Martin Schürmann



Abstract

Hands, much like faces, convey social information, instructions and intentions to an observer. While the neural processes of face perception have been widely studied, it was only recently that fMRI identified occipito-temporal areas sensitive to static images of hands as body parts. To complement these studies with fine-grained timing information, we measured event-related EEG potentials (ERPs) from 33 subjects who were presented with static images of hands versus faces, whole bodies, and inanimate objects as controls. Already at N1 latency, ~ 170 ms, hand-related ERP patterns were manifest in two results: (1) significant differences in amplitudes for images of hands versus bodies in occipito-temporal N1 responses; (2) left lateralization of responses to images of hands, and also of the difference waveforms (hands minus bodies), quantifying hand-related responses. In line with fMRI studies of hand-sensitive areas distinct from extrastriate body area (EBA), the current findings provide electrophysiological evidence for hand-sensitive brain activation, occurring at a similarly early latency as N1 responses to faces.

Journal Article Type Article
Publication Date Nov 1, 2017
Journal Neuropsychologia
Print ISSN 0028-3932
Electronic ISSN 1873-3514
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 106
APA6 Citation Espírito Santo, M. G., Maxim, O. S., & Schürmann, M. (2017). N1 responses to images of hands in occipito-temporal event-related potentials. Neuropsychologia, 106, doi:10.1016/j.neuropsychologia.2017.09.012
DOI https://doi.org/10.1016/j.neuropsychologia.2017.09.012
Keywords EEG; Event-related potentials (ERPs); N1; Hands; Faces; Bodies; Hemispheric laterality; Extrastriate body area (EBA)
Publisher URL http://www.sciencedirect.com/science/article/pii/S002839321730338X
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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