Cowan R S, Alcantara J I, Blamey P J, Clark G M
Department of Otolaryngology, University of Melbourne, Royal Victorian Eye and Ear Hospital, Victoria, Australia.
J Acoust Soc Am. 1988 Jun;83(6):2328-38. doi: 10.1121/1.396364.
Speech discrimination testing, using both open- and closed-set materials, was carried out with four severely to profoundly hearing impaired adults and seven normally hearing subjects to assess performance of a wearable eight-channel electrotactile aid (Tickle Talker). Significant increases in speechtracking rates were noted for all subjects when using the electrotactile aid. After 70 h of training, mean tracking rate in the tactile plus lipreading condition was 55 words per minute (wpm), as compared with 36 wpm for lipreading alone, for the normally hearing group. For the hearing impaired group, the mean tracking rate in the aided condition was 37 wpm, as compared with 24 wpm for lipreading alone, following 35 h of training. Performance scores on Central Institute for the Deaf (CID) everyday sentences, Consonant Nucleus Consonant (CNC) words, and closed-set vowel and consonant identification were significantly improved when using the electrotactile aid. Performance scores, using the aid without lipreading, were well above chance on consonant and vowel identification and on elements of the Minimal Auditory Capabilities Battery. Two hearing impaired subjects have used the device satisfactorily in the home environment.
使用开放集和封闭集材料对4名重度至极重度听力受损成年人和7名听力正常的受试者进行了言语辨别测试，以评估一种可穿戴八通道电触觉辅助设备（挠痒痒交谈器）的性能。使用电触觉辅助设备时，所有受试者的言语跟踪率均显著提高。经过70小时的训练后，听力正常组在触觉加唇读条件下的平均跟踪率为每分钟55个单词（wpm），而仅唇读时为36 wpm。对于听力受损组，经过35小时的训练后，辅助条件下的平均跟踪率为37 wpm，而仅唇读时为24 wpm。使用电触觉辅助设备时，在中央聋人研究所（CID）日常句子、辅音核心辅音（CNC）单词以及封闭集元音和辅音识别方面的表现得分显著提高。在不进行唇读的情况下使用该辅助设备时，在辅音和元音识别以及最小听觉能力电池的各项测试中的表现得分远高于随机水平。两名听力受损受试者在家庭环境中对该设备的使用效果令人满意。
