NDLI: Emotion Effects on the N170: A Question of Reference?

Content Provider	Springer Nature Link
Author	Rellecke, Julian Sommer, Werner Schacht, Annekathrin
Copyright Year	2012
Abstract	We investigated whether face-specific processes as indicated by the N170 in event-related brain potentials (ERPs) are modulated by emotional significance in facial expressions. Results yielded that emotional modulations over temporo-occipital electrodes typically used to measure the N170 were less pronounced when ERPs were referred to mastoids than when average reference was applied. This offers a potential explanation as to why the literature has so far yielded conflicting evidence regarding effects of emotional facial expressions on the N170. However, spatial distributions of the N170 and emotion effects across the scalp were distinguishable for the same time point, suggesting different neural sources for the N170 and emotion processing. We conclude that the N170 component itself is unaffected by emotional facial expressions, with overlapping activity from the emotion-sensitive early posterior negativity accounting for amplitude modulations over typical N170 electrodes. Our findings are consistent with traditional models of face processing assuming face and emotion encoding to be parallel and independent processes.
Starting Page	62
Ending Page	71
Page Count	10
File Format	PDF
ISSN	08960267
Journal	Brain Topography
Volume Number	26
Issue Number	1
e-ISSN	15736792
Language	English
Publisher	Springer US
Publisher Date	2012-10-09
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Event-related brain potentials Emotional facial expressions N170 Early posterior negativity Neurosciences Psychiatry Neurology
Content Type	Text
Resource Type	Article
Subject	Neurology Anatomy Radiology, Nuclear Medicine and Imaging Neurology (clinical) Radiological and Ultrasound Technology

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