Comparison of two methods for selecting minimum stimulation levels used in programming the Nucleus 22 cochlear implant.
Comparison of two methods for selecting minimum stimulation levels used in programming the Nucleus 22 cochlear implant.
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DOI：
10.1044/jslhr.4204.814
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发表时间：
1999-08
期刊：
影响因子：
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通讯作者：
M. Skinner;L. Holden;T. Holden;M. Demorest
中科院分区：
文献类型：
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作者：
M. Skinner;L. Holden;T. Holden;M. Demorest
Nucleus 22 人工耳蜗中有源电极的最小刺激水平设置为阈值（临床默认值）和升高水平 (M = +2.04 dB)，以确定升高的水平是否会提高接受者对 SPEAK 语音编码策略的轻柔语音的理解。八名语言后失聪成年人参与了 4 阶段 A1B1A2B2 测试设计。语音识别通过安静环境下的辅音-元音核辅音 (CNC) 单词和噪音环境下的句子进行评估，在每个阶段结束时的每周 2 次会议中，均以 50、60 和 70 dB SPL 进行评估。在 50 和 60 dB SPL 的单词和音素以及 50 和 70 dB SPL 的句子的提升级别程序中，组平均得分明显更高。在研究结束时，所有参与者都选择在日常生活中使用提高水平的计划。结果表明，临床上对 Nucleus 22 接受者使用提高水平的程序有可能使轻柔的声音变得更大声，因此在日常生活中更加突出。需要进一步的研究来确定这种方法是否适用于其他人工耳蜗植入设备。
Minimum stimulation levels for active electrodes in a Nucleus 22 cochlear implant were set at threshold (clinical default value) and raised levels (M = +2.04 dB) to determine if raised levels would improve recipients' understanding of soft speech sounds with the SPEAK speech coding strategy. Eight postlinguistically deaf adults participated in a 4-phase A1B1A2B2 test design. Speech recognition was evaluated with consonant-vowel nucleus-consonant (CNC) words in quiet and sentences in noise, both presented at 50, 60, and 70 dB SPL during 2 weekly sessions at the end of each phase. Group mean scores were significantly higher with the raised level program for words and phonemes at 50 and 60 dB SPL and for sentences at 50 and 70 dB SPL. All participants chose to use the raised level program in everyday life at the end of the study. The results suggest that clinical use of a raised level program for Nucleus 22 recipients has the potential to make soft sounds louder and, therefore, more salient in everyday life. Further research is needed to determine if this approach is appropriate for other cochlear implant devices.