RELATIONS AMONG DIFFERENT MEASURES OF SPEECH RECEPTION IN SUBJECTS USING A COCHLEAR IMPLANT
RELATIONS AMONG DIFFERENT MEASURES OF SPEECH RECEPTION IN SUBJECTS USING A COCHLEAR IMPLANT
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DOI：
10.1121/1.405252
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发表时间：
1992-10-01
影响因子：
2.4
通讯作者：
CUNEO, PA
中科院分区：
文献类型：
--
作者：
RABINOWITZ, WM;EDDINGTON, DK;CUNEO, PA
在约 20 名使用 Ineraid 多通道人工耳蜗的语后耳聋成年用户中获得了一套全面的言语接收测量结果。这些措施包括对嵌入两类句子（难度不同）中的单词进行音频、视觉和视听识别，以及对孤立单音节单词的纯音频识别、辅音识别（12 个替代项，/Ca/）和元音识别（8 个替代项，/bVt/）。对于大多数植入者来说，句子测试中的视听收益非常高。使用 Boothroyd 和 Nittrouer 提出的幂律变换来评估纯音频分数之间的定量关系 [J.声学。苏克。是。 84, 101-114 (1988)]可以解释句子上下文（通过因子 k）以及单词和音素识别之间的关系（通过因子 j）的好处。在受试者之间存在的广泛表现中，从句子中单词的识别、孤立的单词、语音片段和潜在语音特征的检索的连续体中观察到语音接收测量之间存在显着的顺序。孤立词识别的直接测量和句子衍生测量以及分段识别的直接测量和单词衍生测量之间的相关性超过 0.85。涉及有限听觉信号呈现、单通道和多通道植入以及触觉系统的各种其他研究的结果揭示了单词识别、整体辅音识别性能和辅音特征招募之间的类似模式。最后，改善辅音位置提示的接收被认为是在语音接收方面产生最大潜在收益的关键。
A comprehensive set of speech reception measures were obtained in a group of about 20 postlingually deafened adult users of the Ineraid multichannel cochlear implant. The measures included audio, visual, and audiovisual recognition of words embedded in two types of sentences (with differing degrees of difficulty) and audio-only recognition of isolated monosyllabic words, consonant identification (12 alternatives, /Ca/), and vowel identification (8 alternatives, /bVt/). For most implantees, the audiovisual gains in the sentence tests were very high. Quantitative relations among audio-only scores were assessed using power-law transformations suggested by Boothroyd and Nittrouer [J. Acoust. Soc. Am. 84, 101-114 (1988)] that can account for the benefit of sentence context (via a factor k) and the relation between word and phoneme recognition (via a factor j). Across the broad range of performance that existed among the subjects, substantial order was observed among measures of speech reception along the continuum from recognition of words in sentences, words in isolation, speech segments, and the retrieval of underlying phonetic features. Correlations exceeded 0.85 among direct and sentence-derived measures of isolated word recognition as well as among direct and word-derived measures of segmental recognition. Results from a variety of other studies involving presentation of limited auditory signals, single-channel and multichannel implants, and tactual systems revealed a similar pattern among word recognition, overall consonant identification performance, and consonantal feature recruitment. Finally, improving the reception of consonantal place cues was identified as key to producing the greatest potential gains in speech reception.