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. 2020 May 7;11:634. doi: 10.3389/fpsyg.2020.00634

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Copyright © 2020 Acevedo, Poulin, Collins and Brown.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Regional brain response interactions with COMT rs4680 (A versus G alleles) and change in romantic love scores (T2-T1: love maintenance) among newlyweds in response to viewing face images of the partner versus a highly familiar, neutral acquaintance. Inset shows a sagittal view of the insular cortex. Green: T1 brain response in the VTA/SN (bottom arrows) and insular cortex (inset). Red: T2 responses in the insular cortex (left arrow and inset). (B) Scatterplot shows the correlations between COMT rs4680 (A versus G alleles) and L VTA/SN response at T1. (C) Scatterplot shows the correlations between COMT rs4680 (A versus G alleles) and L insular cortex response at T1 and T2. R, right. L, Left. I, insular cortex; SN, substantia nigra; VTA, ventral tegmental area. Other colored regions did not meet the statistical requirements for whole-brain analysis or were not an ROI. Yellow, significant correlations at T1 and T2. Green, significant correlations at T1. Red, significant correlations at T2.