The parenting brain may undergo remodeling that supports the adjustment to new parenthood. Prior work on human mothers has found gray matter volume decreases from preconception to early postpartum in multiple structures, including the left hippocampus, which was the only structure to show gray matter volume recovery at 2 years postpartum. This is consistent with evidence from animal models that the hippocampus is unusually plastic across reproductive transitions. However, no studies have focused specifically on hippocampal volume changes in human fathers. Among 38 men who were scanned by magnetic resonance imaging (MRI) before and after having their first child, individual differences in left hippocampal volume changes were associated with men's prenatal oxytocin, postpartum testosterone, and postpartum adaptation to parenthood. Across the whole sample, hippocampal volumes did not change significantly from prenatal to postpartum. However, men who showed larger increases in left hippocampal volume from prenatal to postpartum reported stronger parent–child bonding and affectionate attachment and lower parenting stress. Fathers with higher levels of prenatal oxytocin showed larger left hippocampal volume increases across the transition to parenthood. In turn, greater increases in left hippocampal volume predicted lower postpartum testosterone after adjusting for prenatal testosterone. These findings did not extend to the right hippocampus. In conclusion, remodeling of the left hippocampus across the transition to new fatherhood may reflect adaptation to parenthood in human males.
Social cognition may facilitate fathers' sensitive caregiving behavior. We administered the Why‐How Task, an fMRI task that elicits theory of mind processing, to expectant fathers (
- NSF-PAR ID:
- 10362512
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- Developmental Psychobiology
- Volume:
- 63
- Issue:
- 5
- ISSN:
- 0012-1630
- Page Range / eLocation ID:
- p. 1549-1567
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
More Like this
-
more » « less
Abstract -
more » « less
This study examined trajectories of new parents’ perceptions of conflictual coparenting and predictors thereof. Partners in 182 dual-earner different-gender U.S. couples reported their prenatal marital conflict and individual characteristics (conflictual coparenting in the family of origin, parenting self-efficacy expectations, and parenting role beliefs) during the third trimester of pregnancy, their infant’s characteristics (negative affectivity and gender) at 3 months postpartum, and their perceptions of undermining coparenting and exposure to conflict at 3, 6, and 9 months postpartum. Results of latent growth curve models indicated that new parents’ perceptions of undermining, but not exposure to conflict, increased similarly from 3 to 9 months. Fathers perceived higher initial undermining than mothers, but there were no gender differences in exposure to conflict. For mothers, greater prenatal marital conflict and greater infant negative affectivity were associated with elevated levels of perceived undermining and exposure to conflict. For fathers, more egalitarian role beliefs were associated with lower undermining and less exposure to conflict, whereas greater prenatal marital conflict, higher conflictual coparenting in the family of origin, and greater infant negative affectivity were associated with greater exposure to conflict. Fathers also perceived greater undermining and exposure to conflict when mothers reported higher prenatal marital conflict, whereas mothers’ greater conflictual coparenting in the family of origin was related to fathers’ lower exposure to conflict. These findings provide valuable information to strengthen programs focused on improving coparenting.
-
Affective neuroscience research suggests that maturational changes in reward circuitry during adolescence present opportunities for new learning, but likely also contribute to increases in vulnerability for psychiatric disorders such as depression and substance abuse. Basic research in animal models and human neuroimaging has made progress in understanding the normal development of reward circuitry in adolescence, yet, few functional neuroimaging studies have examined puberty-related influences on the functioning of this circuitry. The goal of this study was to address this gap by examining the extent to which striatal activation and cortico-striatal functional connectivity to cues predicting upcoming rewards would be positively associated with pubertal status and levels of pubertal hormones (dehydroepiandrosterone, testosterone, estradiol). Participants included 79 adolescents (10-13 year olds; 47 girls) varying in pubertal status who performed a novel reward cue processing task during fMRI. Pubertal maturation was assessed using sex-specific standardized composite measures based on Tanner staging (self-report and clinical assessment) and scores from the Pubertal Development Scale. These composite measures were computed to index overall pubertal maturation as well as maturation of the adrenal and gonadal axes separately for boys and girls. Basal levels of circulating pubertal hormones were measured using immunoassays from three samples collected weekly upon awakening across a three-week period. Results indicated greater striatal activation and functional connectivity between nucleus accumbens (NAcc) and medial prefrontal cortex (mPFC) to reward cue (vs. no reward cue) on this task. Also, girls with higher levels of estradiol showed reduced activation in left and right caudate and greater NAcc-putamen connectivity. Girls with higher levels of testosterone showed greater NAcc connectivity with the anterior cingulate cortex and the insula. There were no significant associations in boys. Findings suggest that patterns of activation and connectivity in cortico-striatal regions are associated with reward cue processing, particularly in girls. Longitudinal follow-up neuroimaging studies are needed to fully characterize puberty-specific effects on the development of these neural regions and how such changes may contribute to pathways of risk or resilience in adolescence.more » « less
-
Uncertainty permeates decisions from the trivial to the profound. Integrating brain and behavioral evidence, we discuss how probabilistic (varied outcomes) and temporal (delayed outcomes) uncertainty differ across age and individuals; how critical tests adjudicate between theories of uncertainty (prospect theory and fuzzy-trace theory); and how these mechanisms might be represented in the brain. The same categorical gist representations of gains and losses account for choices and eye-tracking data in both value-allocation (add money to gambles) and risky-choice tasks, disconfrming prospect theory and confrming predictions of fuzzy-trace theory. The analysis is extended to delay discounting and disambiguated choices, explaining hidden zero effects that similarly turn on categorical distinctions between some gain and no gain, certain gain and uncertain gain, gain and loss, and now and later. Bold activation implicates dorsolateral prefrontal and posterior parietal cortices in gist strategies that are not just one tool in a grab-bag of cognitive options but rather are general strategies that systematically predict behaviors across many different tasks involving probabilistic and temporal uncertainty. High valuation (e.g., ventral striatum; ventromedial prefrontal cortex) and low executive control (e.g., lateral prefrontal cortex) contribute to risky and impatient choices, especially in youth. However, valuation in ventral striatum supports reward-maximizing and gist strategies in adulthood. Indeed, processing becomes less “rational” in the sense of maximizing gains and more noncompensatory (eye movements indicate fewer tradeoffs) as development progresses from adolescence to adulthood, as predicted. Implications for theoretically predicted “public-health paradoxes” are discussed, including gist versus verbatim thinking in drug experimentation and addiction.more » « less
-
more » « less
Abstract Objective. Sensorimotor decisions require the brain to process external information and combine it with relevant knowledge prior to actions. In this study, we explore the neural predictors of motor actions in a novel, realistic driving task designed to study decisions while driving.Approach. Through a spatiospectral assessment of functional connectivity during the premotor period, we identified the organization of visual cortex regions of interest into a distinct scene processing network. Additionally, we identified a motor action selection network characterized by coherence between the anterior cingulate cortex (ACC) and dorsolateral prefrontal cortex (DLPFC).Main results. We show that steering behavior can be predicted from oscillatory power in the visual cortex, DLPFC, and ACC. Power during the premotor periods (specific to the theta and beta bands) correlates with pupil-linked arousal and saccade duration.Significance. We interpret our findings in the context of network-level correlations with saccade-related behavior and show that the DLPFC is a key node in arousal circuitry and in sensorimotor decisions.
