Purpose: The aim of this
study was to investigate and shortened the N4 latency. The noise-induced
amplitude developmental and noise-induced changes in central changes of
P1, N2, and N4 were strongest frontally. Furthermore, auditory
processing indexed by event-related potentials background noise degraded
the MMN. At both ages, MMN in typically developing children. was
significantly elicited only by the consonant change, Method: P1, N2, and
N4 responses as well as mismatch and at the age of 4 years, also by the
vowel duration change negativities (MMNs) were recorded for standard
syllables during noise. and consonants, frequency, intensity, vowel, and
vowel Conclusions: Developmental changes indexing maturation duration
changes in silent and noisy conditions in the same of central auditory
processing were found from every 14 children at the ages of 2 and 4
years. response studied. Noise degraded sound encoding and Results: The
P1 and N2 latencies decreased and the N2, echoic memory and impaired
auditory discrimination at N4, and MMN amplitudes increased with
development both ages. The older children were as vulnerable to the of
the children. The amplitude changes were strongest impact of noise as
the younger children. at frontal electrodes. At both ages, background
noise Supplemental materials: https://doi.org/10.23641/asha. decreased
the P1 amplitude, increased the N2 amplitude.