間隙起始時間與間隙持續時間對典型發展學齡兒童偏差相關負向電位之影響

// Effects of gap onset time and gap duration on the deviant-related negativity in typically developing school-age children

被動 EEG 測試500 ms噪音中10或30 ms靜音缺口（DRN，偏差相關反應）｜DRN 隨缺口變長而增、隨出現時點延後而減；400 ms 消失，成人在300 ms 有小幅反應，兒童僅於15與50 ms 對30 ms 顯著｜行為靈敏度整體高但兒童較低且與 DRN 無關；結論為自動缺口偵測具時間限制且兒童較弱，主動偵測動員額外機制，影響聽覺發展評估應用。

// This study tested whether automatic change detection (deviant-related response, DRN) to within-stimulus silent gaps depends on gap duration and timing, and whether children and adults differ, using passive EEG to 500-ms noise bursts with 10- or 30-ms gaps at six onset times plus a separate active gap-detection task (d'). DRN amplitude increased with gap duration and decreased as gap onset was delayed; DRNs were absent at 400 ms, adults showed a small DRN at 300 ms, while children showed significant DRNs only for 30-ms gaps at 15 and 50 ms. Behavioral sensitivity was high overall but lower in children and did not correlate with DRN amplitude. Thus automatic gap detection is temporally constrained and more limited in children, and active detection appears to recruit mechanisms beyond those indexed by the passive DRN.

Published 2026年9月14日