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Differential responses to infant faces in relation to maternal substance use: An exploratory study
Journal article   Open access   Peer reviewed

Differential responses to infant faces in relation to maternal substance use: An exploratory study

Helena J V Rutherford, Sarah W Yip, Patrick D Worhunsky, Sohye Kim, Lane Strathearn, Marc N Potenza and Linda C Mayes
Drug and alcohol dependence, Vol.207, pp.107805-107805
02/01/2020
DOI: 10.1016/j.drugalcdep.2019.107805
PMCID: PMC7060928
PMID: 31874448
url
https://www.ncbi.nlm.nih.gov/pmc/articles/7060928View
Open Access

Abstract

Maternal substance use and addiction has been associated with negative consequences for parenting and may increase addiction vulnerability in the developing child. Neuroimaging research suggests that substance use may decrease the reward of caring for infants and heighten stress reactivity to affective infant cues. Thirty-two substance-using mothers and twenty-two non-substance-using mothers were presented with emotional face and cry stimuli generated from their own and a demographically matched unknown infant during fMRI scanning. Between-group differences in neural activity during task performance were assessed using whole-brain, mixed-effects models corrected for multiple comparisons (voxel-level p < 0.001, pFWE<0.05). Relative to non-substance-using mothers, substance-using mothers exhibited greater activation when viewing their own infant's face as compared to an unknown infant's face across multiple brain regions, including superior medial frontal, inferior parietal, and middle temporal regions. Substance-using mothers also had a decreased response to sad infant faces in the ventral striatum relative to the non-substance-using mothers. Neural responses to own vs. unknown infant cries did not significantly differ between substance-using and non-substance-using mothers. Findings suggest overlapping cortical and subcortical brain regions implicated in responding to infant faces, with activation differences related to infant familiarity, emotional expression, and maternal substance use. While prior work has focused on attenuated neural responses to infant cues, greater attention is needed toward understanding the increased reactivity to affective infant cues observed in substance-using mothers.
Cues Mother-Child Relations - psychology Acoustic Stimulation Facial Recognition - physiology Humans Facial Expression Infant Male Brain - physiology Case-Control Studies Mothers - psychology Young Adult Magnetic Resonance Imaging Parenting - psychology Brain Mapping Substance-Related Disorders - psychology Adult Female Crying - psychology Photic Stimulation

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