中文口語產出中詞彙選擇與音韻編碼的老化：一項 EEG（腦電圖）研究

// Aging of lexical selection and phonological encoding in Chinese spoken word production: An EEG study

圖片—詞干擾＋EEG（腦電）顯示：老化影響口語詞彙與語音處理｜行為：頻率效應放大、語音促進減弱；ERP：詞頻神經敏感下降且時序延後，干擾與表徵不穩增強｜結論：老化提升語音競爭、削弱傳遞時序與穩定性，符抑制/傳遞缺陷理論，建議語言復健強調抑制與時序訓練。

// This study used a picture-word interference paradigm with EEG to test how healthy aging affects lexical selection and phonological encoding in spoken word production. Behaviorally, older adults showed larger word- and syllable-frequency effects but reduced phonological facilitation, indicating altered lexical and phonological processing. ERP results revealed stage-dependent age differences: older adults had reduced and temporally shifted neural sensitivity to word frequency, greater influence from phonological distractors, and later, less stable syllable/phonological representations. Together, the findings indicate aging increases phonological competition and reduces the timing and temporal stability of phonological transmission, consistent with inhibitory deficit and transmission deficit accounts.

Published 2026年9月23日