Abstract
Background:
Auditory event-related potentials (AERP) are neurophysiological correlates of sound perception and cognitive processes. Our aim was to study in very preterm born children at preschool age if AERP correlate with cognitive outcome.
Methods:
Seventy children (mean ± SD gestational age 27.4 ± 1.9 wk, birth weight 996 ± 288 g) were investigated at age 4.3–5.3 y with psychological testing (WPPSI-R, four subtests of NEPSY). Electroencephalogram was recorded while they listened to a repeated standard tone, randomly replaced by one of three deviants. Latencies and amplitudes for AERP components and mean amplitudes in successive 50-ms AERP time windows were measured.
Results:
Better cognitive test results and higher gestational age correlated with shorter P1 latencies and more positive mean amplitudes 150–500 ms after stimulus change onset. Neonatal brain damage was associated with a negative displacement of AERP curves. Neonatal morbidity had an impact on earlier time windows while gestational age and brain damage on both early and later time windows.
Conclusion:
AERP measures were associated with cognitive outcome. Neonatal morbidity mainly affects early cortical auditory encoding, while immaturity and brain damage additionally influence higher cortical functions of auditory perception and distraction. Perinatal auditory environment might play a role in development of auditory processing.
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Acknowledgements
We thank Ann-Cathrine Berg, Anette Carnemalm, Eva Hammarstrand, Christina Helgason, and Bodil Persson for excellent help in accomplishing the testings.
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Hövel, H., Partanen, E., Tideman, E. et al. Auditory event-related potentials are related to cognition at preschool age after very preterm birth. Pediatr Res 77, 570–578 (2015). https://doi.org/10.1038/pr.2015.7
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DOI: https://doi.org/10.1038/pr.2015.7
