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Infant autonomic nervous system response and recovery: Associations with maternal risk status and infant emotion

Jill Suurland1, Kristiaan B van der Heijden1, Hanneke J A Smaling1

  • 1Leiden University.

Development and Psychopathology
|September 2, 2016
PubMed

Insights

Infant risk status impacts autonomic nervous system (ANS) responses and emotion regulation. High-risk infants show altered stress recovery, indicating early maladaptive stress regulation linked to maternal risk factors.

Area of Science:

  • Developmental Psychology
  • Neuroscience
  • Pediatrics

Background:

  • Infant autonomic nervous system (ANS) reactivity and emotion regulation are crucial for healthy development.
  • Maternal risk factors, such as psychopathology and social adversity, may impact infant stress responses.
  • Understanding early-life stress regulation is vital for identifying risks for later psychopathology.

Purpose of the Study:

  • To investigate the association between infant risk status, cumulative risk, and ANS reactivity/recovery.
  • To examine the relationship between risk status and infant emotion regulation during socioemotional challenges.
  • To explore the mediating roles of parasympathetic and sympathetic activity in infant stress responses and emotion regulation.

Main Methods:

  • Studied 121 6-month-old infants classified by World Health Organization risk criteria.
  • Measured heart rate, respiratory sinus arrhythmia (parasympathetic), and pre-ejection period (sympathetic) during a still-face paradigm.
  • Coded infant emotion regulation behaviors during the still-face paradigm.

Main Results:

  • High-risk infants exhibited increased heart rate, parasympathetic withdrawal, and sympathetic activation during recovery from the still-face episode.
  • Cumulative risk correlated with heightened sympathetic nervous system activation.
  • Infant recovery heart rate was mediated by both parasympathetic and sympathetic activity, suggesting resource mobilization.
  • Maternal risk indirectly influenced infant emotion regulation via parasympathetic and sympathetic pathways.

Conclusions:

  • Maternal risk is linked to maladaptive infant stress regulation, characterized by altered ANS response and recovery.
  • Specific measures of ANS regulation are important for understanding early-life stress and psychopathology risk.
  • Findings highlight the early impact of maternal risk on infant socioemotional development and regulation.

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