Dissemin is shutting down on January 1st, 2025

Published in

Oxford University Press, Social Cognitive and Affective Neuroscience, 8(8), p. 855-862, 2012

DOI: 10.1093/scan/nss084

Links

Tools

Export citation

Search in Google Scholar

DATby perceived MC interaction on human prefrontal activity and connectivity during emotion processing

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Green circle
Published version: archiving allowed
Data provided by SHERPA/RoMEO

Abstract

Background: Maternal care (MC) and dopamine modulate brain activity during emotion processing in inferior frontal gyrus (IFG), striatum and amygdala. Reuptake of dopamine from the synapse is performed by the dopamine transporter (DAT), whose abundance is predicted by variation in its gene (DAT 3 0 VNTR; 10 > 9-repeat alleles). Here, we investigated the interaction between perceived MC and DAT 3 0 VNTR genotype on brain activity during processing of aversive facial emotional stimuli. Methods: Sixty-one healthy subjects were genotyped for DAT 3 0 VNTR and categorized in low and high MC individuals. They underwent functional magnetic resonance imaging while performing a task requiring gender discrimination of facial stimuli with angry, fearful or neutral expressions. Results: An interaction between facial expression, DAT genotype and MC was found in left IFG, such that low MC and homozygosity for the 10-repeat allele are associated with greater activity during processing of fearful faces. This greater activity was also inversely correlated with a measure of emotion control as scored with the Big Five Questionnaire. Moreover, MC and DAT genotype described a double dissociation on functional connectivity between IFG and amygdala. Conclusion: These findings suggest that perceived early parental bonding may interact with DAT 3 0 VNTR genotype in modulating brain activity during emotionally relevant inputs.