雙耳時間差與強度差在聲源分離與空間選擇中貢獻不同

// Interaural Time and Level Differences Contribute Differently to Source Segregation and Spatial Selection

本研究探討雙耳時間差（ITDs）與強度差（ILDs）對聲音來源分離及空間注意的影響｜利用功能性近紅外光譜成像（fNIRS）觀察聽者在選擇性聽覺任務中對空間語音或噪音的反應｜結果顯示，ITDs影響辨識率並提升前額葉與側化上顳區活性，ILDs則增加誤報，強調ITDs與ILDs在聲音分離與空間注意中扮演不同關鍵角色。

// This study examined how interaural time differences (ITDs) and interaural level differences (ILDs) affect sound source segregation and spatial attention using a selective auditory task with fNIRS brain imaging. Participants listened to spatially separated speech or noise with varied ITDs and ILDs, showing that spatial cues influenced performance more when the masker was speech. Small ITDs reduced hit rates and increased prefrontal and lateralized superior temporal activity, while natural ILDs caused higher false alarms, indicating they aid source segregation but not lateralization. The findings highlight distinct roles of ITDs and ILDs in auditory scene analysis and spatial selective attention.

Published 2026年7月13日