Related Experiment Video
Updated: Aug 15, 2026
Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Contrasts in brainstem function between normal and high-risk infants in early postnatal life
Insights
Brainstem auditory evoked potentials (BAEPs) reveal distinct maturational trends in high-risk infants compared to healthy controls. These auditory biomarkers can differentiate at-risk infants from healthy peers during the first year of life.
Area of Science:
- Neuroscience
- Developmental Pediatrics
- Auditory Neuroscience
Background:
- Infant hearing screening is crucial for early detection of auditory processing disorders.
- High-risk infants often exhibit developmental delays, necessitating sensitive monitoring methods.
- Brainstem auditory evoked potentials (BAEPs) provide objective measures of auditory pathway integrity.
Purpose of the Study:
- To investigate maturational differences in BAEPs between healthy and high-risk infants.
- To determine if BAEPs can distinguish between these two groups throughout the first year of life.
- To analyze age-related changes in BAEP amplitude and latency in infants.
Main Methods:
- Recording of BAEPs from healthy and high-risk infants at multiple ages (newborn to 1 year).
- Measurement of amplitude and latency for BAEP peaks I, III, and V.
- Application of multivariate analyses of variance to assess effects of age, group, and peak characteristics.
Main Results:
- Significant main effects observed for age, infant group (healthy vs. risk), and BAEP peak characteristics (amplitude, latency).
- A significant interaction between these factors indicated differential maturational trajectories.
- Healthy and high-risk infants demonstrated distinct patterns of BAEP development over the first year.
Conclusions:
- BAEPs serve as valuable biomarkers for tracking auditory development in infants.
- At-risk infants without severe deficits show unique BAEP maturational trends compared to healthy controls.
- BAEP analysis can aid in differentiating high-risk infants from their healthy peers during early development.
Abstract:
Brainstem auditory evoked potentials (BAEPs) were recorded from healthy and high-risk infants at selected ages throughout their first year of life. Amplitude and latency measurements of peaks I, III and V were treated in a series of multivariate analyses of variance. Significant main effects for age (newborn, 3 wk, 6 wk, 3 mth, 6 mth and 1 yr), group (healthy, risk) and peaks (amplitude and latency of BAEP waves I, III and V) were observed. In addition, the interaction between these factors proved statistically significant. As expected, the pattern of response amplitude and latency for the various peaks differed as a function of age. Moreover, healthy and risk infants revealed different maturational trends. These results indicate that infants born 'at risk' but free of severe auditory deficits and major neurological difficulties can be distinguished from healthy (age-matched) controls in terms of the BAEP throughout the first postnatal year.
