窄頻啁啾與 2-1-2 刺激之聽覺腦幹反應的耳蝸位置特異性：高通噪音／衍生反應

// Cochlear Place Specificity of the Auditory Brainstem Response to Narrowband Chirp Versus 2-1-2 Stimuli: High-Pass Noise/Derived Responses

研究比較24名正常聽力成人在高通噪音遮蔽下，窄頻啁啾聲與標準2-1-2音刺激的聽性腦幹反應（ABR）｜啁啾聲雖使V波振幅明顯較大，卻涵蓋刺激頻率上下達1個八度的較廣耳蝸區域｜2-1-2音僅活化約±0.5個八度，頻率特異性較佳；其頻寬是否導致聽損者閾值誤差仍待確認

// This study compared the cochlear place specificity of ABRs elicited by narrowband chirps and standard 2-1-2 tone stimuli using high-pass noise masking in 24 normal-hearing adults. Although chirps produced substantially larger wave V amplitudes, their responses reflected broader cochlear regions, extending up to one octave from the stimulus frequency. In contrast, 2-1-2 tones primarily activated regions within approximately ±0.5 octaves, indicating better frequency specificity. Further research is needed to determine whether chirp bandwidth causes threshold errors in hearing loss.

Published 2026年9月2日