具體與抽象詞多維語意存取的神經動態差異

// Divergent neural dynamics of multidimensional semantic access for concrete and abstract words

以9人ECoG（腦內電訊號）與時間解析編碼，將神經反應分為6個語意維度（視覺、動作、空間、時間、社會、情緒）｜整體反應約350 ms達峰；具體詞的感知/動作維度較早達峰，抽象詞在約225 ms出現社會維度早期高峰｜顯示大腦會依概念類型動態優先不同語意維度，利於語意編碼與語言理解之應用。

// They examined how different semantic dimensions unfold over time. Using time-resolved encoding models on ECoG data from 9 people listening to stories, they decomposed neural responses into six dimensions (vision, motor, space, time, socialness, emotion). While all dimensions together showed a common peak around 350 ms, separating concrete and abstract words revealed a dissociation: for concrete words sensorimotor dimensions peaked earlier than non-sensorimotor ones, whereas for abstract words the social dimension peaked early (~225 ms). The results show the brain dynamically prioritizes different semantic dimensions depending on concept type.

Published 2026年9月2日