單側重度聽損中語音相關大腦皮質活動之半球側化改變：功能性磁振造影（fMRI）研究

// Altered hemispheric lateralization of speech-related cortical activity in unilateral severe hearing loss: an fMRI study

fMRI在語音任務比較正常與單側重度後發性聽損者的TTG（初級）與STG（高階）｜TTG無差異，STG於患者下降，右側失聰最明顯；左側失聰呈左側STG優勢，示耳側半球化改變｜結論：單側聽損改變高階語音處理，支持右耳優勢解釋語音於噪音中理解困難，具復健與助聽應用價值

// Using fMRI during a speech perception task, the study compared activation in primary (TTG) and higher-order (STG) auditory regions in people with severe postlingual unilateral hearing loss (right- or left-sided) versus normal-hearing controls. There were no group differences in the primary auditory cortex (TTG), but STG activation was reduced in patients, especially those with right-sided hearing loss. Left-sided hearing loss showed increased leftward STG dominance, indicating ear-specific effects on hemispheric organization; overall, unilateral loss alters higher-order speech processing and supports a right‑ear advantage as a neural explanation for speech-in-noise difficulties.

Published 2026年9月24日