與聽覺運動處理相關之前中央腦電（EEG）反應低頻振盪

// Low-frequency oscillations in frontocentral EEG responses associated with auditory motion processing

以線性雙耳時差模擬聲源、7速錄EEG，分析cN1/cP2、ERSP與ITC｜ITC較ERSP更早達峰，峰時延隨1°位移時間線性延長｜振幅隨1°反雙曲衰減（即速度近線性增），顯示共用時間整合且ITC最敏感；歸因寬側感受野神經群閾值與整合時差。

// This study tested how timing and strength of EEG evoked and oscillatory responses track auditory motion velocity by simulating motion with linear interaural time-difference changes and recording EEG across seven velocities in a delayed motion task. They analyzed motion-onset responses (cN1, cP2) plus event-related spectral perturbations (ERSP) and inter-trial phase coherence (ITC) in theta and lower-alpha bands, using 1-degree shift time to quantify velocity. ITC peaked earlier than ERSP, peak latencies increased linearly with 1-degree shift time, and response magnitudes declined hyperbolically with 1-degree shift time (i.e., increased roughly linearly with velocity), showing common temporal integration mechanisms across evoked and oscillatory activity with ITC most sensitive to velocity. The authors attribute these patterns to joint activity of neural populations with broad unilateral receptive fields that differ in spatial thresholds and integration times.

Published 2026年9月26日