Prenatal depression alters child's brain connectivity, affects behavior

Prenatal depression alters child's brain connectivity, affects behavior
Prenatal depression symptoms were associated with weakened white matter tracts in the cingulum (left) and amygdala pathway (right). Credit: Hay et al., JNeurosci 2020

Altered brain connectivity may be one way prenatal depression influences child behavior, according to new research in JNeurosci.

Up to one fifth of women experience depression symptoms during pregnancy, with unknown effects on the fetus. Prenatal depression is correlated with behavioral and developmental issues in the child, as well as an increased risk of developing depression at age 18. But how prenatal depression leads to these changes remains unclear.

Hay et al. studied 54 mother/child pairs. Mothers answered a survey about their depression symptoms at several points during their pregnancy. The research team employed diffusion MRI, an imaging technique that reveals the strength of structural connections between brain regions, to examine the children's .

Greater prenatal depression symptoms were associated with weaker white matter connections between involved in emotional processing. This change could lead to dysregulated emotional states in the children and may explain why the children of depressed mothers have a higher risk of developing depression themselves. The weakened white matter was associated with increased aggression and hyperactivity in the male children. These findings highlight the need for better to recognize and treat prenatal depression in order to support the mother and the child's development.


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More information: Amygdala-Prefrontal Structural Connectivity Mediates the Relationship Between Prenatal Depression and Behaviour in Preschool Boys, JNeurosci, DOI: 10.1523/JNEUROSCI.0481-20.2020
Journal information: Journal of Neuroscience

Citation: Prenatal depression alters child's brain connectivity, affects behavior (2020, August 10) retrieved 27 September 2020 from https://medicalxpress.com/news/2020-08-prenatal-depression-child-brain-affects.html
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