Chadwell D L, Greenberg H J
Am J Otol. 1979 Oct;1(2):103-8.
We assessed the types of speech errors made in relation to the acoustic reflex. Ten subjects with unilateral stapedectomies were presented with consonant-vowel nonsense syllables in low pass noise at 70, 95, and 110 dB SPL in each ear. Hearing sensitivity for all subjects was normal or near-normal bilaterally. In the operated ear, speech intelligibility was significantly poorer than in the unoperated ear at all intensity levels. A distinctive feature analysis supported this finding. The data suggest that word discrimination testing in quiet does not adequately reveal the success of stapedectomy surgery. The distinctive feature analysis indicated that rather than consider the acoustic reflex as limiting the forward spread of masking into high frequencies, it would be better to describe it as a general aural overload regulator.
我们评估了与听觉反射相关的言语错误类型。对10名单侧镫骨切除术患者的每只耳朵分别呈现70、95和110 dB声压级的低通噪声中的辅音 - 元音无意义音节。所有受试者双侧听力敏感度均正常或接近正常。在手术耳中，所有强度水平下的言语可懂度均明显低于未手术耳。一项独特特征分析支持了这一发现。数据表明，在安静环境下进行的单词辨别测试并不能充分揭示镫骨切除术的成功与否。独特特征分析表明，与其将听觉反射视为限制掩蔽向前传播到高频，不如将其描述为一种一般的听觉过载调节器。
