Dent L J, Simmons F B, White R L, Roberts L A
Stanford University School of Medicine, Division of Otolaryngology/Head & Neck Surgery, CA 94305.
J Speech Hear Res. 1987 Dec;30(4):480-93. doi: 10.1044/jshr.3004.480.
Four profoundly deaf adults, each a recent recipient of a scala tympani implant, underwent auditory and auditory-visual speech comprehension evaluations. Two subjects had multiple-electrode auditory prostheses, and 2 had single-electrode implants. All subjects were tested preoperatively with a high-power hearing aid, and postoperatively with a single-channel wearable sound processor. Reported here are the results of the first formal speech recognition tests which were conducted during the 8 months after the sound processor fitting. Three subjects had used the single-channel processor on a daily basis for up to 8 months at the time of postoperative testing. The 4th subject was a nonuser. On listening tests, a comparison between pre- and post-implant scores revealed little difference for any subject. On postoperative speechreading tasks, all subjects identified medial consonant phonemes and 2-digit numerals better with stimulation than without. The 3 frequent users of the device experienced significant improvement on connected-discourse tracking, and their speechreading of videotaped and live voice CID Everyday Sentences (Davis & Silverman, 1978) was enhanced with the addition of stimulation. The nonuser was a very proficient speechreader at the outset and exhibited no significant difference on connected-discourse tracking with and without stimulation. Moreover her ability to speechread Everyday Sentences was hampered slightly by the addition of stimulation. This single-channel sound processor functioned as a sensory supplement for the 3 frequent users, but no subject was able to use the processor as a sensory substitute.
四名深度耳聋的成年人，每人都是近期接受了鼓阶植入的患者，接受了听觉及听觉-视觉言语理解评估。两名受试者使用的是多电极听觉假体，另外两名使用的是单电极植入物。所有受试者术前均使用高功率助听器进行测试，术后使用单通道可穿戴声音处理器进行测试。本文报告的是在声音处理器适配后的8个月内进行的首次正式言语识别测试的结果。在术后测试时，三名受试者已每天使用单通道处理器长达8个月。第四名受试者未使用该处理器。在听力测试中，植入前后的分数比较显示，任何受试者的差异都不大。在术后的唇读任务中，所有受试者在有刺激的情况下比没有刺激时能更好地识别中间辅音音素和两位数数字。该设备的三名频繁使用者在连贯语篇跟踪方面有显著改善，并且在添加刺激后，他们对录像和现场语音的CID日常句子（Davis & Silverman，1978）的唇读能力得到了增强。未使用者一开始就是非常熟练的唇读者，在有刺激和无刺激的连贯语篇跟踪中没有表现出显著差异。此外，添加刺激略微妨碍了她对日常句子的唇读能力。这种单通道声音处理器对三名频繁使用者起到了感觉补充的作用，但没有受试者能够将该处理器用作感觉替代物。
