Comparison of bimodal and bilateral cochlear implant users on speech recognition with competing talker, music perception, affective prosody discrimination, and talker identification.
Comparison of bimodal and bilateral cochlear implant users on speech recognition with competing talker, music perception, affective prosody discrimination, and talker identification.
复制标题
DOI：
10.1097/aud.0b013e3181edfbd2
复制
发表时间：
2011-02
期刊：
影响因子：
3.7
通讯作者：
Zeng FG
中科院分区：
文献类型：
--
作者：
Cullington HE;Zeng FG
尽管人工耳蜗在安静环境下的语音识别性能优异，但大多数人工耳蜗使用者在噪声环境下的语音识别、音乐感知、识别语调和区分不同说话者方面存在很大困难。这可能部分是由于耳蜗植入语音处理中的音高编码。目前大多数语音处理策略只使用包络信息，时间精细结构被丢弃。改善电音高感知的一种方法是通过非植入耳朵上的助听器利用残余声学听力（双峰听力）。本研究旨在检验双模态用户在需要良好音高感知的任务上比双侧人工耳蜗用户表现更好的假设。四个音高相关的任务：听力噪音测试（HINT）的句子说的男性说话者与竞争的女性，男性，或儿童说话者。蒙特利尔Amusia评估电池。这是一个音乐测试，有六个分测试，检查音高，节奏和时间感知，以及音乐记忆。Aprosodia电池。这有五个子测试评估方面的情感韵律和识别的讽刺。使用十个不同说话者（三男，三女，两个男孩，两个女孩）说的元音的说话者识别。选择双侧人工耳蜗植入者作为对照组。招募了13名双峰和13名双侧成人人工耳蜗植入者;所有人在安静时都有良好的言语感知。双峰组和双侧组在任何测试中的平均分数之间都没有显著差异，尽管双峰组在几乎所有测试中的表现都优于双侧组。在不同的音高相关任务上的表现是不相关的，这意味着如果一个受试者在一项任务上表现得很好，他们不一定在另一项任务上表现得很好。双模态使用者辅助耳的听阈水平与他们在这些任务上的表现之间的相关性很弱。虽然双模态人工耳蜗组在四项音高相关测试的大部分方面都优于双侧人工耳蜗组，但差异无统计学意义。测试结果之间缺乏相关性表明，所使用的任务不仅仅是提供一个衡量音高能力的标准。即使双峰用户有更好的音高感知，现实世界中使用的任务反映了比音高更多样化的技能。这项研究增加了现有的语音感知，语言和本地化研究，显示双峰和双侧人工耳蜗植入用户之间没有显着差异。
Despite excellent performance in speech recognition in quiet, most cochlear implant users have great difficulty with speech recognition in noise, music perception, identifying tone of voice, and discriminating different talkers. This may be partly due to the pitch coding in cochlear implant speech processing. Most current speech processing strategies use only the envelope information; the temporal fine structure is discarded. One way to improve electric pitch perception is to utilize residual acoustic hearing via a hearing aid on the non-implanted ear (bimodal hearing). This study aimed to test the hypothesis that bimodal users would perform better than bilateral cochlear implant users on tasks requiring good pitch perception. Four pitch-related tasks were used: Hearing in Noise Test (HINT) sentences spoken by a male talker with a competing female, male, or child talker. Montreal Battery of Evaluation of Amusia. This is a music test with six subtests examining pitch, rhythm and timing perception, and musical memory. Aprosodia Battery. This has five subtests evaluating aspects of affective prosody and recognition of sarcasm. Talker identification using vowels spoken by ten different talkers (three male, three female, two boys, and two girls). Bilateral cochlear implant users were chosen as the comparison group. Thirteen bimodal and thirteen bilateral adult cochlear implant users were recruited; all had good speech perception in quiet. There were no significant differences between the mean scores of the bimodal and bilateral groups on any of the tests, although the bimodal group did perform better than the bilateral group on almost all tests. Performance on the different pitch-related tasks was not correlated, meaning that if a subject performed one task well they would not necessarily perform well on another. The correlation between the bimodal users' hearing threshold levels in the aided ear and their performance on these tasks was weak. Although the bimodal cochlear implant group performed better than the bilateral group on most parts of the four pitch-related tests, the differences were not statistically significant. The lack of correlation between test results shows that the tasks used are not simply providing a measure of pitch ability. Even if the bimodal users have better pitch perception, the real-world tasks used are reflecting more diverse skills than pitch. This research adds to the existing speech perception, language, and localization studies that show no significant difference between bimodal and bilateral cochlear implant users.