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Using a Murine Model of Psychosocial Stress in Pregnancy as a Translationally Relevant Paradigm for Psychiatric Disorders in Mothers and Infants
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Respiratory sinus arrhythmia moderates the impact of maternal prenatal anxiety on infant negative affectivity

Mikko J Peltola1, Tiina Mäkelä1, E Juulia Paavonen2,3

  • 1School of Social Sciences and Humanities/Psychology, University of Tampere, Tampere, Finland.

Developmental Psychobiology
|October 21, 2016
PubMed

Insights

Maternal prenatal anxiety impacts infant negative affectivity (NA) differently based on infant vagal tone. High respiratory sinus arrhythmia (RSA) in infants amplified prenatal anxiety

Area of Science:

  • Developmental Psychology
  • Neuroscience
  • Behavioral Science

Background:

  • Maternal prenatal anxiety is linked to infant negative affectivity (NA).
  • Individual differences in susceptibility to prenatal environmental influences are not fully understood.
  • Infant respiratory sinus arrhythmia (RSA), a marker of parasympathetic activity, may indicate differential susceptibility.

Purpose of the Study:

  • To investigate if infant RSA moderates the association between maternal prenatal anxiety and infant NA.
  • To identify potential biological markers for differential susceptibility to prenatal stress.

Main Methods:

  • Assessed maternal prenatal anxiety in the third trimester.
  • Measured infant negative affectivity (NA) and baseline respiratory sinus arrhythmia (RSA) at 8-10 months.
  • Used regression analyses to examine the interaction between prenatal anxiety and infant RSA in predicting infant NA (N=173).

Main Results:

  • A significant interaction was found between maternal prenatal anxiety and infant RSA in predicting infant NA.
  • Infants with high RSA showed a positive association between prenatal anxiety and NA.
  • Infants with low RSA did not show this association, suggesting a protective effect.

Conclusions:

  • Infant RSA may serve as a marker for differential susceptibility to prenatal environmental influences.
  • Vagal tone, indicated by RSA, could help identify infants at risk for negative developmental outcomes due to prenatal stress.
  • This research highlights the importance of considering individual biological factors in understanding the impact of prenatal experiences.

Keywords:
differential susceptibilityinfantprenatal anxietyrespiratory sinus arrhythmiatemperament

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