Abstract
Early experiences with caregivers may elucidate pathways of intergenerational risk related to posttraumatic stress disorder (PTSD). Infant cardiac reactivity and low vagal tone, measured with heart-rate (HR) and respiratory sinus arrhythmia (RSA), are significantly impacted by parenting behaviors and may be an important early biomarker of risk for later vulnerability to trauma-related psychopathology. Infant autonomic response to stress is impacted by maternal postpartum depression and history of childhood abuse.
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