Cardiorespiratory mechanisms triggered during music perception in preterm infants and adults

Laura Lavezzo1,2, Francisca Barcos-Munoz3, Damien Benis4

  • 1Division of Development and Growth, Child and Adolescent Department, University of Geneva, Geneva, Switzerland.

Iscience
|October 13, 2025
PubMed

Insights

Music listening affects preterm infants and adults differently. Preterm infants showed increased respiratory sinus arrhythmia (RSA), suggesting calm alertness, while adults exhibited decreased RSA, indicating heightened alertness.

Area of Science:

  • Neonatal physiology
  • Auditory neuroscience
  • Autonomic nervous system function

Background:

  • The autonomic nervous system's response to dynamic auditory stimuli, like music, is not well understood in preterm newborns.
  • Understanding these responses is crucial for assessing preterm infants' physiological readiness for environmental interaction.

Purpose of the Study:

  • To investigate the cardiac and respiratory autonomic responses of preterm infants and adults to music listening.
  • To compare cardiorespiratory coupling and heart rate dynamics between preterm infants and adults during music exposure.

Main Methods:

  • Assessed 18 preterm infants and 19 adults during music listening.
  • Analyzed heart rate dynamics, respiratory sinus arrhythmia (RSA), and cardiorespiratory coupling using power spectral density analysis.
  • Examined the interpolated interbeat interval series for frequency domain cardiovascular responses.

Main Results:

  • Both groups exhibited decreased high-frequency power during music, indicating similar frequency domain cardiovascular responses.
  • Preterm infants showed a significant increase in RSA (p = 0.005), suggesting calm alertness.
  • Adults displayed decreased RSA (p = 0.003) and an increased low-frequency/high-frequency power ratio, suggesting heightened alertness.

Conclusions:

  • While basic cardiovascular responses to music are similar, RSA and cardiorespiratory coupling reveal distinct autonomic dynamics in preterm infants compared to adults.
  • Preterm infants' increased RSA may indicate a state of physiological preparedness for interaction.
  • Music listening elicits differential autonomic responses, highlighting the unique balance of autonomic regulation in preterm newborns.

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