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C. Yrigollen, et al., “Genes Controlling Affiliative Behavior as Candidate Genes for Autism,” Biological Psychiatry, Vol. 63, No. 10, 2008, pp. 911-916. doi:10.1016/j.biopsych.2007.11.015

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• TITLE: Association of Genetic Variation in the Promoter Region of OXTR with Differences in Social Affective Neural Processing

  AUTHORS: Garret O’Connell, Heather C. Whalley, Prerona Mukherjee, Andrew C. Stanfield, Christian Montag, Jeremy Hall, Martin Reuter

  KEYWORDS: OXTR; Promoter Region; Inferior Occipital Gyrus; fMRI; Emotional Facial Processing

  JOURNAL NAME: Journal of Behavioral and Brain Science, Vol.2 No.1, February 29, 2012

  ABSTRACT: Evidence supports the involvement of oxytocin in social behavior. The oxytocin receptor gene (OXTR) has been associated with differences in social brain function and risk for autism. Motivated by recent work, we investigated the effect of variation in the common functional rs2268498 T/C polymorphism in the promoter region of OXTR on neural responses to fear expressions. 46 healthy subjects were divided into genotype groups of C carriers (n = 32) and TT ho-mozygous (n = 14) and neural activity was measured during the recognition of fear and neutral expressions. Results showed that during the recognition of fear expressions, the TT genotype group exhibited increased responding in the inferior occipital gyrus, considered important for face processing, compared to carriers of the C allele (P