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Insensitive parenting may accelerate the development of the amygdala-medial prefrontal cortex circuit
Sandra Thijssen1, Ryan L Muetzel2, Marian J Bakermans-Kranenburg1
1Leiden University.
Insights
Parental sensitivity influences brain development in children. Lower parental sensitivity is linked to accelerated amygdala-medial prefrontal cortex connectivity development in children aged 6-10, particularly girls.
Area of Science:
- Neuroscience
- Developmental Psychology
- Child Psychiatry
Background:
- The amygdala-medial prefrontal cortex (mPFC) circuit is crucial for socio-emotional regulation.
- Developmental trajectories of this circuit are influenced by early life experiences, including parental care.
- Understanding these influences is key to identifying potential risks for socio-emotional difficulties.
Purpose of the Study:
- To investigate the association between age and amygdala-mPFC connectivity in children aged 6-10.
- To determine if this association is moderated by parental sensitivity (maternal and paternal).
- To explore potential gender differences in these relationships.
Main Methods:
- Resting-state functional magnetic resonance imaging (fMRI) was used to assess amygdala-mPFC connectivity in 124 children.
- Parental sensitivity was assessed via observational methods when children were 4 years old.
- Statistical analyses examined interactions between age, parental sensitivity, and gender on amygdala-mPFC connectivity.
Main Results:
- A significant interaction effect was found between parental sensitivity and age on amygdala-mPFC connectivity.
- Lower combined parental sensitivity was associated with stronger age-related increases in amygdala-mPFC connectivity.
- This effect was more pronounced in girls and linked to less sensitive mothers, suggesting accelerated circuit development.
Conclusions:
- Parental sensitivity plays a role in modulating the developmental trajectory of the amygdala-mPFC circuit during childhood.
- Children with lower parental sensitivity may exhibit accelerated development of this socio-emotional regulatory circuit.
- Findings highlight the importance of sensitive parenting for typical neurodevelopment and socio-emotional functioning.
Abstract:
This study examined whether the association between age and amygdala-medial prefrontal cortex (mPFC) connectivity in typically developing 6- to 10-year-old children is correlated with parental care. Resting-state functional magnetic resonance imaging scans were acquired from 124 children of the Generation R Study who at 4 years old had been observed interacting with their parents to assess maternal and paternal sensitivity. Amygdala functional connectivity was assessed using a general linear model with the amygdalae time series as explanatory variables. Higher level analyses assessing Sensitivity × Age as well as exploratory Sensitivity × Age × Gender interaction effects were performed restricted to voxels in the mPFC. We found significant Sensitivity × Age interaction effects on amygdala-mPFC connectivity. Age was related to stronger amygdala-mPFC connectivity in children with a lower combined parental sensitivity score (b = 0.11, p = .004, b = 0.06, p = .06, right and left amygdala, respectively), but not in children with a higher parental sensitivity score, (b = -0.07, p = .12, b = -0.06, p = .12, right and left amygdala, respectively). A similar effect was found for maternal sensitivity, with stronger amygdala-mPFC connectivity in children with less sensitive mothers. Exploratory (parental, maternal, paternal) Sensitivity × Age × Gender interaction analyses suggested that this effect was especially pronounced in girls. Amygdala-mPFC resting-state functional connectivity has been shown to increase from age 10.5 years onward, implying that the positive association between age and amygdala-mPFC connectivity in 6- to 10-year-old children of less sensitive parents represents accelerated development of the amygdala-mPFC circuit.