輕度認知障礙中的詞彙類別特定語義缺損：基於BERT嵌入的圖片描述敘事分析

// Word Category-Specific Semantic Deficits in Mild Cognitive Impairment: A BERT Embedding Analysis of Picture Description Narratives

本研究利用BERT詞嵌入分析敘述文本，探討輕度認知障礙（MCI）是否引起語義記憶中類別特異性變化｜結果顯示MCI患者對具體詞的語義分散度降低，抽象詞與功能詞則無明顯影響｜此發現指示MCI早期可能損害感知基礎的語義表徵，且BERT工具能有效檢測選擇性語義缺損，補足傳統神經心理評估不足。

// This study examined whether mild cognitive impairment (MCI) causes category-specific changes in semantic memory by analyzing narrative transcripts using BERT embeddings. Results showed that individuals with MCI had reduced semantic dispersion specifically for concrete words, while abstract and function words were unaffected. This suggests early degradation of perceptually grounded semantic representations in MCI. The findings demonstrate that BERT embeddings can effectively detect selective semantic deficits, providing insights complementary to traditional neuropsychological methods.

Published 2026年8月12日