Maternal adverse childhood experiences and infant visual-limbic white matter development

Area of Science:

• Neuroscience
• Developmental Psychology
• Public Health

Background:

• Maternal adverse childhood experiences (ACEs) predict offspring mental health, but the underlying mechanisms are unclear.
• Early life adversity can impact intergenerational mental health trajectories.
• The study investigates the link between maternal ACEs and infant brain development.

Purpose of the Study:

• To evaluate the association between maternal ACEs and infant brain development.
• To focus on neural circuits involved in emotional and sensory processing.
• To explore potential pathways for intergenerational risk transmission.

Main Methods:

• 101 mother-infant dyads from a longitudinal study.
• Maternal ACEs assessed using the Adverse Childhood Questionnaire (0-1 low, ≥2 high).
• Infant white matter microstructure (fractional anisotropy) measured using MRI in specific tracts.

Main Results:

• High maternal ACEs associated with decreased fractional anisotropy in the infant's left inferior longitudinal fasciculus (ILF).
• Increased radial diffusivity observed in the left ILF of infants exposed to high maternal ACEs.
• Exploratory analyses suggested differences in visual processing networks and corticothalamic tracts.

Conclusions:

• Maternal ACEs predict altered neural development of the inferior longitudinal fasciculus in infants.
• Early sensory circuits in the infant brain are vulnerable to maternal ACEs.
• Findings may inform understanding of higher-order emotional and cognitive circuit maturation.