Effect of mother's voice on neonatal respiratory activity and EEG delta amplitude

Abstract

While the influence of the mother's voice on neonatal heart‐rate response and its relevant activity on cerebral cortex and the autonomic nervous system (ANS) are well known, few studies have assessed its influence on respiratory activity. We investigated the relationship among the respiration rate, the delta wave amplitudes through electroencephalography, and the basal state of ANS through the respiratory variability index while 22 full‐term neonates hear their mother's voice and an unknown voice. It was found that when respiratory variability was large, a transient (<5 s) change in respiration rates was observed in response to an unknown voice, while a greater increase in the delta wave amplitude was observed in the frontal lobe than the parietal one in response to the mother's voice. Conversely, when respiratory variability was small, a sustained increase (>10 s) in respiration rates was observed in response to the mother's voice, while a greater increase in the delta wave amplitude was found in both the frontal and parietal lobes. These results suggest that the basal state of ANS influences the latency of increases in respiration rates. Furthermore, induced by the mother's voice, transient increases in respiration rates are reduced in association with frontal lobe activity, and sustained increases in respiration rates are promoted in association with frontal and parietal lobe activities.

Effects of maternal voice on painful procedures in preterm and full‐term infants: A systematic review and meta‐analysis

“…13,45 For full-term neonates, maternal voice also had beneficial effects on physiologic response. 46 These findings are consistent with our study results. To sum up, maternal voice may be an effective strategy for pain relief and physiologic stability in infants when performing painful procedures.…”

“…Previous study reported that maternal voice could increase the physiologic, emotional and behavioural stability of preterm infants 13,45 . For full‐term neonates, maternal voice also had beneficial effects on physiologic response 46 . These findings are consistent with our study results.…”

Gaze Orienting in the Social World: An Exploration of the Role Played by Caregiving Vocal and Tactile Behaviors in Infants with Visual Impairment and in Sighted Controls

“…From the intrauterine environment onward, infants are exposed to human voices, particularly that of the mother, as sounds and vibrations are transmitted to the developing auditory mechanisms of the fetus [11]. The distinct impact of maternal vs. unknown adults' voices on infants' attention has been largely evidenced from the early weeks of life, affecting sucking behaviors [12], as well as the growth and functioning of the cerebral cortex and the autonomic nervous system [11,13] and eliciting sensible heart-rate responses [14]. Also, the types of parental verbalizations may play a specific role, for example, Ferrari et al [15] showed that fetuses at 25 weeks of gestation were selectively responsive to specific maternal vocalizations, exhibiting a congruent change in their mouth motor behaviors.…”

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“…In 1986, DE Rumelhart and GEHinton et al proposed a neural network error backpropagation (EBP) [ 15 ] training algorithm, which solved the “exclusive OR” problem of the “perceptron” and reduced the neural network. After the 1990s, neural network methods have gradually been applied to the automatic classification and recognition of biological signals [ 16 ], and certain results have been achieved.…”