BEHAVIORAL, INTEGRATIVE AND CLINICAL NEUROSCIENCEThe own-sex effect in facial expression recognitionDoi, Hirokazua; Amamoto, Takaakib; Okishige, Yuukab; Kato, Mikakoa; Shinohara, KazuyukiaAuthor Information aDepartment of Neurobiology and Behavior, Unit of Basic Medical Sciences, Graduate School of Biomedical Sciences bSchool of Medicine, Nagasaki University, Nagasaki, Japan Correspondence to Kazuyuki Shinohara, MD, PhD, Department of Neurobiology and Behavior, Unit of Basic Medical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-12-4 Sakamoto-cho, Nagasaki City, Nagasaki Prefecture 852-8523, Japan Tel: +81 95 819 7035; fax: +81 95 819 7036;e-mail: firstname.lastname@example.org Received 6 March 2010 accepted 11 March 2010 NeuroReport: June 2nd, 2010 - Volume 21 - Issue 8 - p 564-568 doi: 10.1097/WNR.0b013e328339b61a Buy Metrics Abstract Responses to smiling and nonsmiling expressions are influenced by sex of both viewer and expresser. This study investigated the stage of neural processing at which the sexes of viewer and expresser modulate the recognition of smiling and nonsmiling expressions by measuring event-related potentials. The results showed that late positive component was larger to neutral expression of own-sex faces than to that of opposite-sex faces. These results indicate that neural correlates of facial expression recognition are influenced by the sexes of both viewer and expresser of facial expression at the stage of cognitive evaluation. © 2010 Lippincott Williams & Wilkins, Inc.