Maturation of cortical auditory evoked potentials (CAEPs) to speech recorded from frontocentral and temporal sites: three months to eight years of age.

摘要: Abstract The goal of the current analysis was to examine maturation cortical auditory evoked potentials (CAEPs) from three months age eight years age. superior frontal positive–negative–positive sequence (P1, N2, P2) and temporal site, negative–positive–negative (possibly, Na, Ta, Tb T-complex) were examined. Event-related recorded 63 scalp sites a 250-ms vowel. Amplitude latency peaks measured at left right (near Fz) (T7 T8). In addition, largest peak (typically corresponding P1) selected global field power (GFP). results revealed large positive (P1) easily identified across all ages. N2 emerged after 6 months following P2 between 8 30 months latencies these decreased exponentially with most rapid decrease observed for P1. For amplitude, only P1 showed clear relationship age, becoming more in somewhat linear fashion. At negative peak, which might be clearly both children older than 14 months peaking 100 200 ms. measures Na moderately correlated. different maturational timecourse (linear nature) suggesting least partial independence. Distinct Ta (positive) (negative) peaks, 120 220 ms not consistently found groups children, except present 7 year olds. Future research, includes manipulation stimulus factors, use modeling techniques will needed explain apparent, protracted site study.