Alcántara J I, Blamey P J, Clark G M
Department of Otolaryngology, University of Melbourne, Australia.
J Am Acad Audiol. 1993 Mar;4(2):98-108.
The following study compared the effectiveness of unimodal and bimodal training strategies at improving the perception of speech information under a variety of conditions. Normal-hearing subjects were trained in the perception of vowel and consonant stimuli. Speech information was provided either via a multiple channel electrotactile speech processing aid (the Tickle Talker), and/or by a 200-Hz low-pass filtered auditory signal. Two subjects were trained only in the combined tactile-plus-auditory (TA) condition; the remaining two were trained in both the tactile-alone (T) and auditory-alone (A) conditions; however, only one condition was used at any single time. All subjects were evaluated in the TA, T, and A conditions, both at the beginning of the study, prior to training, and at the completion of training, on closed-set vowel and consonant confusion tests, and on an open-set word test. Results indicated that whilst statistically significant improvements occurred from one evaluation period to the next, in both groups of subjects, the improvements per condition were not dependent on the type of training received. The results provide a preliminary indication that the provision of unimodal training does not impair the perception of speech information under bimodal perception conditions.
以下研究比较了单峰和双峰训练策略在多种条件下提高语音信息感知能力方面的有效性。听力正常的受试者接受了元音和辅音刺激感知方面的训练。语音信息通过多通道电触觉语音处理辅助设备（“挠痒痒说话者”）和/或200赫兹低通滤波听觉信号提供。两名受试者仅在触觉加听觉（TA）组合条件下接受训练；其余两名受试者分别在单独触觉（T）和单独听觉（A）条件下接受训练；然而，在任何单一时刻仅使用一种条件。所有受试者在研究开始时（训练前）以及训练结束时，均在TA、T和A条件下，接受闭集元音和辅音混淆测试以及开放集单词测试的评估。结果表明，虽然两组受试者从一个评估期到下一个评估期均出现了统计学上的显著改善，但每种条件下的改善并不取决于所接受的训练类型。这些结果提供了一个初步迹象，即单峰训练的提供在双峰感知条件下不会损害语音信息的感知。
