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Updated: Jul 19, 2026
Preterm EEG: A Multimodal Neurophysiological Protocol
Published on: February 18, 2012
The effect of early postnatal auditory stimulation on outcomes in preterm infants
Juliann M Di Fiore1,2, Gloria Liu1, Kenneth A Loparo3
1Dept of Pediatrics, Case Western Reserve University, Cleveland, OH, 44016, USA.
Insights
Auditory stimulation can improve brain development and respiratory control in preterm infants. Optimizing sound type, duration, and timing is key for this low-cost intervention.
Area of Science:
- Neonatal Neuroscience
- Developmental Pediatrics
Background:
- Preterm infants miss crucial third-trimester in-utero sensory experiences, impacting central nervous system development.
- The typical intrauterine soundscape differs significantly from the neonatal intensive care unit environment, potentially affecting brain maturation.
- Auditory and respiratory control pathways are particularly vulnerable to altered sensory input in preterm infants.
Purpose of the Study:
- To highlight the impact of the postnatal auditory environment on preterm infant outcomes.
- To emphasize the potential of auditory stimulation as an intervention.
- To identify areas for future research in optimizing auditory interventions.
Main Methods:
- Review of studies investigating postnatal auditory stimulation in preterm infants.
- Analysis of the effects of different sound exposures on infant outcomes.
- Examination of inconsistencies in current research regarding sound parameters and gestational age.
Main Results:
- Auditory stimulation can stabilize respiration and improve neuronal maturation in preterm infants.
- The effectiveness of auditory stimulation is contingent upon the type of sound, duration of exposure, and infant's gestational age.
- Current research exhibits inconsistencies in sound levels, exposure duration, and timing.
Conclusions:
- Auditory stimulation offers a low-cost, low-risk intervention for preterm infants.
- Optimizing the type, duration, and timing of auditory stimulation is crucial for maximizing benefits.
- Further research is needed to determine the ideal auditory intervention strategies for different developmental windows.
Abstract:
Preterm infants are deprived of in utero sensory stimulation during the third trimester, an important period of central nervous system development. As a result, maturational trajectories are often reduced in infants born preterm. One such system affected is the brain including the auditory and respiratory control pathways. During normal pregnancy the intrauterine environment attenuates external auditory stimuli while exposing the fetus to filtered maternal voice, intra-abdominal sounds, and external stimuli. In contrast, during the third trimester of development, preterm infants are exposed to a vastly different soundscape including non-attenuated auditory sounds and a lack of womb related stimuli, both of which may affect postnatal brain maturation. Therefore, fostering a nurturing postnatal auditory environment during hospitalization may have a significant impact on related outcomes of preterm infants. Studies using a range of postnatal auditory stimulations have suggested that exposure to sounds or lack thereof can have a significant impact on outcomes. However, studies are inconsistent with sound levels, duration of exposure to auditory stimuli, and the gestational age at which infants are exposed. IMPACT: Auditory stimulation can provide a low cost and low risk intervention to stabilize respiration, improve neuronal maturation and reduce long-term sequelae in preterm infants. The potential benefits of auditory stimulation are dependent on the type of sound, the duration of exposure and age at time of exposure. Future studies should focus on the optimal type and duration of sound exposure and postnatal developmental window to improve outcomes.
