V.M. Bloedel Hearing Research Center, Department of Otolaryngology, University of Washington, Seattle, WA 98195, United States.
Hear Res. 2010 Apr;262(1-2):1-8. doi: 10.1016/j.heares.2010.02.003. Epub 2010 Feb 6.
Experienced users of the Clarion cochlear implant were tested acutely with the HiResolution (HiRes) and HiRes Fidelity120 (F120) processing strategies. Three psychophysically-based tests were used including spectral-ripple discrimination, Schroeder-phase discrimination and temporal modulation detection. Three clinical outcome measures were used including consonant-nucleus-consonant (CNC) word recognition in quiet, word recognition in noise and the clinical assessment of music perception (CAMP). Listener's spectral-ripple discrimination ability improved with F120, but Schroeder-phase discrimination was worse with F120 than with HiRes. Listeners who had better than average acuity showed the biggest effects. There were no significant effects of the processing strategy on any of the clinical abilities nor on temporal modulation detection. Additionally, the listeners' day-to-day clinical strategy did not appear to influence the result suggesting that experience with the strategies did not play a significant role. The results underscore the value of acoustic psychophysical measures through the sound processor as a tool in clinical research, because these measures are more sensitive to changes in the processing strategies than traditional clinical measures, e.g. speech understanding. The measures allow for the evaluation of sensitivity to specific acoustic attributes revealing the extent to which different processing strategies affect these basic abilities and could thus improve the efficiency of the development of processing strategies.
经验丰富的 Clarion 人工耳蜗使用者接受了急性 HiResolution（HiRes）和 HiRes Fidelity120（F120）处理策略的测试。使用了三种基于心理物理的测试，包括频谱波纹辨别、施罗德相位辨别和时间调制检测。使用了三种临床结果测量方法，包括安静环境下的辅音-核-辅音（CNC）单词识别、噪声中的单词识别和音乐感知临床评估（CAMP）。听众的频谱波纹辨别能力随着 F120 的使用而提高，但 F120 对施罗德相位辨别的影响不如 HiRes 好。具有高于平均敏锐度的听众表现出最大的影响。处理策略对任何临床能力或时间调制检测都没有显著影响。此外，听众的日常临床策略似乎没有影响结果，这表明对策略的经验并没有起到重要作用。这些结果强调了通过声音处理器进行声学心理物理测量作为临床研究工具的价值，因为这些测量方法比传统的临床测量方法更能敏感地反映处理策略的变化，例如言语理解。这些措施可以评估对特定声学属性的敏感性，揭示不同处理策略对这些基本能力的影响程度，从而提高处理策略的开发效率。
