Recognition of "real-world" musical excerpts by cochlear implant recipients and normal-hearing adults
Recognition of "real-world" musical excerpts by cochlear implant recipients and normal-hearing adults
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DOI：
10.1097/00003446-200506000-00001
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发表时间：
2005-06-01
期刊：
影响因子：
3.7
通讯作者：
Macpherson, B
中科院分区：
文献类型：
--
作者：
Gfeller, K;Olszewski, C;Macpherson, B
目的：本研究的目的是：（a）比较使用人工耳蜗植入的语言习得成年人和听力正常的成年人对“真实世界”音乐片段的识别;（B）比较使用不同设备和处理策略的人工耳蜗植入者的表现;以及（c）检查植入者在识别与言语感知测试表现相关的音乐选择方面的差异性，设计：79个人工耳蜗植入者和30名听力正常的成年人进行了测试，对系统选择的摘录在真实的生活中听到的音乐录音的开放式识别。两组的识别准确率进行了比较，三种音乐流派：古典，国家，流行。识别准确率与语音识别分数，认知措施，人口统计学措施，包括音乐背景。髋关节植入者在识别以前熟悉的关节功能方面明显不准确。（听力损失前已知）音乐摘录比正常听力成人（p < 0.001）的所有三种类型。植入物接受者在识别国家项目时最准确，在识别经典项目时最不准确。由于植入物类型（Nucleus、Clarion或Ineraid）或程控策略（SPEAK、CIS或ACE），植入物接受者之间没有显著差异。对于人工耳蜗植入者，旋律识别和其他措施之间的相关性是中等到弱的强度;那些具有统计学显著相关性的包括测试时的年龄（负相关），在选定的言语感知测试中的表现，以及植入后集中音乐听的量。音高，和声，音色混合）的音乐必不可少的开放集识别著名的音乐选择。因此，植入者必须依靠提取那些最容易通过植入物获得的音乐特征，如歌词或特征节奏模式，以识别日常生活中听到的音乐选择。
Objective: The purposes of this study were (a) to compare recognition of "real-world" music excerpts by postlingually deafened adults using cochlear implants and normal-hearing adults; (b) to compare the performance of cochlear implant recipients using different devices and processing strategies; and (c) to examine the variability among implant recipients in recognition of musical selections in relation to performance on speech perception tests, performance on cognitive tests, and demographic variables.Design: Seventy-nine cochlear implant users and 30 normal-hearing adults were tested on open-set recognition of systematically selected excerpts from musical recordings heard in real life. The recognition accuracy of the two groups was compared for three musical genre: classical, country, and pop. Recognition accuracy was correlated with speech recognition scores, cognitive measures, and demographic measures, including musical background.Results: Cochlear implant recipients were significantly less accurate in recognition of previously familiar (known before hearing loss) musical excerpts than normal-hearing adults (p < 0.001) for all three genre. Implant recipients were most accurate in the recognition of country items and least accurate in the recognition of classical items. There were no significant differences among implant recipients due to implant type (Nucleus, Clarion, or Ineraid), or programming strategy (SPEAK, CIS, or ACE). For cochlear implant recipients, correlations between melody recognition and other measures were moderate to weak in strength; those with statistically significant correlations included age at time of testing (negatively correlated), performance on selected speech perception tests, and the amount of focused music listening following implantation.Conclusions: Current-day cochlear implants are not effective in transmitting several key structural features (i.e., pitch, harmony, timbral blends) of music essential to open-set recognition of well-known musical selections. Consequently, implant recipients must rely on extracting those musical features most accessible through the implant, such as song lyrics or a characteristic rhythm pattern, to identify the sorts of musical selections heard in everyday life.