Chermak G D, Vonhof M R, Bendel R B
Department of Speech and Hearing Sciences, Washington State University, Pullman.
Ear Hear. 1989 Apr;10(2):90-3. doi: 10.1097/00003446-198904000-00002.
Eight learning disabled (LD) adults and eight control subjects identified monosyllabic words presented simultaneously in the presence of speech spectrum noise and three types of linguistic maskers. The performance of LD subjects was poorer than that of the control subjects under each masking condition. Word identification was poorest in the presence of speech noise for both groups. No difference in performance was seen as a function of the linguistic content of the competing speech maskers. These results suggest that LD subjects present greater susceptibility to acoustic masking relative to control subjects and may support the view that auditory-language deficits observed in LD individuals may be secondary to an underlying acoustic-phonetic disorder rather than a central phonologic disorder. LD college students may experience S/N ratios in the classroom that perpetuate or exacerbate their listening problems.
八名学习障碍（LD）成年人和八名对照受试者识别了在语音频谱噪声和三种语言掩蔽器存在的情况下同时呈现的单音节词。在每种掩蔽条件下，LD受试者的表现均比对照受试者差。两组在语音噪声存在的情况下，单词识别能力最差。作为竞争性言语掩蔽器语言内容的函数，未观察到表现上的差异。这些结果表明，相对于对照受试者，LD受试者对声学掩蔽更敏感，并且可能支持这样一种观点，即LD个体中观察到的听觉语言缺陷可能继发于潜在的声学语音障碍而非中枢语音障碍。LD大学生在课堂上可能会遇到信噪比，这会使他们的听力问题持续存在或加剧。
