Development of mother-infant co-regulation: The role of infant vagal tone and temperament at 6, 9, and 12 months of age

Prenatal Opioid Exposure and Maternal-Infant Coregulation as Indicators of Early Infant Neurodevelopment

BACKGROUND

Little is known about the short- and long-term effects of prenatal opioid exposure on infant neurodevelopment. Infants with neonatal opioid withdrawal syndrome (NOWS) are often admitted to neonatal intensive care units (NICU) where the development of coregulation between mothers and infants is easily disrupted. Understanding early mother-infant coregulation is needed to guide intervention strategies for these high-risk mother-infant dyads.

PURPOSE

Explore the impact of prenatal opioid exposure on mother-infant coregulation, as an indicator of early infant neurodevelopment, in response to a standardized stress experiment, the Still Face Paradigm (SFP).

METHODS

A prospective cohort design was used to enroll opioid-exposed (N = 11) and non-exposed (N = 13) mother-infant dyads, when infants discharged from the NICU were 6 to 9 months. Dyadic heart rate variability (HRV) data were used as a measure of coregulation and were recorded using heart rate monitors during the 3 phases of the SFP: (a) baseline, (b) still-face, or flat affect, and (c) reunion. We conducted analyses to determine differences within the HRV dyad profiles.

RESULTS

HRV profiles differed between the 2 study groups. In the opioid-exposed group: (a) infants exhibited more irregular autonomic processes, (b) mothers had higher HRV baselines, and (c) there was an overall dysregulation between mothers and infants compared to the non-opioid exposed group.

IMPLICATIONS FOR PRACTICE AND RESEARCH

These differences may suggest that prenatal opioid exposure contributes to difficulty with dyadic co-regulation which may negatively impact early infant neurodevelopment. Additional research is needed to better understand the role of prenatal opioid exposure in infant neurodevelopment.

"Katerina gets mad": Infants' physiological and behavioral responses to co-viewing educational, self-regulatory media

A growing body of research has focused on the physiological impact of media on older children and adolescents. Less research has been focused on the potential physiological impact of media on infants and younger children, especially media designed to be age appropriate and educational in content. In this study, we examined respiratory sinus arrhythmia (RSA) in infants (N = 269, M_age  = 17.13 months) while they co-viewed an educational video clip that modeled emotion regulation and contrasted their physiological response to an unoccupied baseline and a frustration paradigm (arm-restraint). Given parent reports showing the calming effect of educational media viewing in young children, we anticipated that a similar pattern of calming would be observed physiologically in infants. Results showed that relative to baseline, most infants demonstrated an increase in RSA while co-viewing, suggesting greater parasympathetic (regulatory) activation consistent with behavioral calming. However, infants who demonstrated vagal withdrawal during co-viewing (decrease in RSA) were more likely to have parents who used a tablet to help infants go to sleep at night. Vagal withdrawal was also associated with increased levels of negative affect observed during the co-viewing task. Findings are discussed in relation to the contextual effect of co-viewing age-appropriate, educational media on children's physiological responses.