音素變化的神經處理：兒童與成人之間的差異

// Neural Processing of Phoneme Changes: Differences Between Children and Adults

比較5–6歲中英雙語兒童與成人於ERP（MMN＝早期聲音偵測；P3a＝注意轉向）｜兒童MMN振幅減小且峰值延後；P3a振幅較高且潛伏延遲，並出現成人未見的晚期正向差異波｜顯示語音處理中早期聽覺偵測與注意系統仍在發育，為語言發展評估與介入指標

// This study compared neural responses to a vowel-based phoneme change (/da/ → /di/) in 5–6-year-old Chinese-English bilinguals versus adults using a passive oddball ERP task (MMN and P3a). Both groups showed MMN and P3a to the deviant, but children had reduced MMN (smaller mean amplitudes, later peaks) and a larger, delayed P3a (higher mean and peak amplitudes, later latency). Children also produced a pronounced late positive mismatch response that adults did not show. These results indicate ongoing maturation of early auditory change detection and involuntary attention orienting during phoneme processing.

Published 2026年9月10日