Peer-reviewed article
Humming and Homeostasis: Insights from Infants, Mothers, Mantras and Caregiving.
Gratier M, Carvalho ME ·
Summary
Written by AI, not yet AICS's view · claude-haiku-4-5-20251001This paper examines how humming—continuous vocalisation with a closed mouth—may help regulate infants' bodily functions and support their development. The authors propose that when caregivers hum during interactions with infants, particularly premature babies during skin-to-skin care, it can stabilise the infant's heart rate and breathing while also encouraging the infant to respond vocally. The mechanism involves how humming's rhythmic patterns and vibrations engage the infant's developing awareness of their own body and autonomic nervous system, laying groundwork for later social and cognitive abilities.
Key points
- Humming generates sustained sonic, vibratory and respiratory patterns that engage interoceptive and autonomic processes
- Maternal humming during kangaroo care with preterm infants can stabilise physiological parameters
- Humming invites infant vocal participation and organises moments of social engagement
- Humming functions as an embodied, interoceptive form of co-regulation for both infants and caregivers
- The practice links physiological homeostasis with early communicative exchange
Limitations
This is a theoretical paper that synthesises existing research rather than reporting new empirical findings. The document does not specify the strength of evidence from the studies of maternal humming during kangaroo care, making it unclear how robustly the proposed mechanisms have been demonstrated.
Abstract
Humming is a ubiquitous yet understudied form of human vocalisation that may play a role in regulating internal bodily states during early development. Unlike speech or singing with lyrics, humming consists of continuous, semantically unstructured vocal sounds produced with a closed mouth. It generates sustained sonic, vibratory and respiratory patterns that engage interoceptive and autonomic processes. This paper explores the hypothesis that humming critically contributes to homeostatic regulation in caregiver-infant interaction. Drawing on research in developmental psychology, perinatal care and vocal practice, we propose that humming provides a simple mechanism through which caregivers may scaffold the infant's developing interoceptive awareness, paving the way to subsequent social cognition abilities. Through slow rhythmic breathing, chest and cranial vibration, and temporally structured vocal phrasing, humming may influence cardio-respiratory rhythms and support autonomic balance while also organising moments of social engagement. Evidence is gathered from studies of maternal humming during kangaroo care with preterm infants, showing that these vocalisations can stabilise physiological parameters and invite infant vocal participation. We argue that humming may function as an embodied, interoceptive form of co-regulation for both infants and caregivers, linking physiological homeostasis with early communicative exchange.