Phillips Susan L, Richter Scott J, McPherson David
University of North Carolina at Greensboro, Greensboro, NC 27402-6170, USA.
J Speech Lang Hear Res. 2009 Feb;52(1):118-29. doi: 10.1044/1092-4388(2008/07-0228). Epub 2008 Jul 29.
This study examined differences in voiced consonant-vowel (CV) perception in older listeners with normal hearing and in 2 groups of older listeners with matched hearing losses: those with good and those with poor word recognition scores.
Thirty-six participants identified CVs from an 8-item display from the natural voiced initial consonants/b, d, g, m, n, eth, v and z/in three vowel contexts (/a, o, u/) spoken by a male and a female talker.
The listeners with hearing loss and poor word recognition scores (WRS) made more of the same types of errors, as well as errors not made by listeners with hearing loss and good word recognition. Errors above chance rates for these listeners were highest in the context of /a/ and were similar in the contexts of /o/ and /u/. Sequential information analyses (SINFAs) verified that information was transmitted least efficiently in the context of /a/. The results yielded a list of consonant confusions unique to listeners with poor WRS.
Listeners with poor WRS have more difficulty identifying voiced initial consonants in CV syllables than do listeners with good WRS. These listeners made some systematic errors, but most errors were nonsystematic, perhaps due to the low level of feature information transmitted.
本研究调查了听力正常的老年听众与两组听力损失程度匹配的老年听众（单词识别分数高的和单词识别分数低的）在浊辅音-元音（CV）感知方面的差异。
36名参与者从包含8个项目的展示中识别CV，这些项目由男性和女性说话者在三种元音语境（/a、o、u/）中说出，包含自然浊音起始辅音/b、d、g、m、n、ð、v和z/。
单词识别分数低的听力损失听众犯的相同类型错误更多，同时也犯了单词识别分数高的听力损失听众未犯的错误。这些听众高于随机概率的错误在/a/语境中最高，在/o/和/u/语境中相似。序列信息分析（SINFAs）证实，信息在/a/语境中传输效率最低。结果得出了一份单词识别分数低的听众特有的辅音混淆列表。
单词识别分数低的听众在识别CV音节中的浊音起始辅音时比单词识别分数高的听众更困难。这些听众犯了一些系统性错误，但大多数错误是非系统性的，可能是由于传输的特征信息水平较低。
