The maternal brain is more flexible and responsive at rest: effective connectivity of the parental caregiving network in postpartum mothers.

Autor: Orchard ER; Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, 3800, Australia.; Monash Biomedical Imaging, Monash University, Melbourne, VIC, 3800, Australia.; Australian Research Council Centre of Excellence for Integrative Brain Function, Melbourne, Australia.; Department of Psychology, Yale University, New Haven, CT, USA.; Yale Child Study Center, Yale University, New Haven, CT, USA., Voigt K; Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, 3800, Australia.; Monash Biomedical Imaging, Monash University, Melbourne, VIC, 3800, Australia., Chopra S; Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, 3800, Australia.; Monash Biomedical Imaging, Monash University, Melbourne, VIC, 3800, Australia.; Department of Psychology, Yale University, New Haven, CT, USA., Thapa T; Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, 3800, Australia.; Monash Biomedical Imaging, Monash University, Melbourne, VIC, 3800, Australia., Ward PGD; Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, 3800, Australia.; Monash Biomedical Imaging, Monash University, Melbourne, VIC, 3800, Australia.; Australian Research Council Centre of Excellence for Integrative Brain Function, Melbourne, Australia., Egan GF; Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, 3800, Australia.; Monash Biomedical Imaging, Monash University, Melbourne, VIC, 3800, Australia.; Australian Research Council Centre of Excellence for Integrative Brain Function, Melbourne, Australia., Jamadar SD; Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, 3800, Australia. sharna.jamadar@monash.edu.; Monash Biomedical Imaging, Monash University, Melbourne, VIC, 3800, Australia. sharna.jamadar@monash.edu.; Australian Research Council Centre of Excellence for Integrative Brain Function, Melbourne, Australia. sharna.jamadar@monash.edu.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Mar 23; Vol. 13 (1), pp. 4719. Date of Electronic Publication: 2023 Mar 23.
DOI: 10.1038/s41598-023-31696-4
Abstrakt: The field of neuroscience has largely overlooked the impact of motherhood on brain function outside the context of responses to infant stimuli. Here, we apply spectral dynamic causal modelling (spDCM) to resting-state fMRI data to investigate differences in brain function between a group of 40 first-time mothers at 1-year postpartum and 39 age- and education-matched women who have never been pregnant. Using spDCM, we investigate the directionality (top-down vs. bottom-up) and valence (inhibition vs excitation) of functional connections between six key left hemisphere brain regions implicated in motherhood: the dorsomedial prefrontal cortex, ventromedial prefrontal cortex, posterior cingulate cortex, parahippocampal gyrus, amygdala, and nucleus accumbens. We show a selective modulation of inhibitory pathways related to differences between (1) mothers and non-mothers, (2) the interactions between group and cognitive performance and (3) group and social cognition, and (4) differences related to maternal caregiving behaviour. Across analyses, we show consistent disinhibition between cognitive and affective regions suggesting more efficient, flexible, and responsive behaviour, subserving cognitive performance, social cognition, and maternal caregiving. Together our results support the interpretation of these key regions as constituting a parental caregiving network. The nucleus accumbens and the parahippocampal gyrus emerging as 'hub' regions of this network, highlighting the global importance of the affective limbic network for maternal caregiving, social cognition, and cognitive performance in the postpartum period.
(© 2023. Crown.)
Databáze: MEDLINE
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