n-of-m 人工耳蜗策略中频谱与时间线索的权重取决于声音音高
Weighting of Spectral and Temporal Cues with n-of-m Cochlear Implant Strategies Depends on Voice Pitch.
文献信息
| PMID | 42832006 |
|---|---|
| 原文 | 在 PubMed 查看原文 ↗ |
| 发表日期 | 2026 |
| 作者 | Floris Rotteveel |
| 作者单位 | Department of Otorhinolaryngology / Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands. f.rotteveel@rug.nl. |
| 期刊 | Journal of the Association for Research in Otolaryngology : JARO |
| SCI 分区 | Q1 |
| IF | 3.1 |
| 研究类型 | 临床研究 · 临床 |
| 所属专科 | 耳科 |
中文摘要
目的： 频谱和时间线索对人工耳蜗（CI）使用者音高感知的相对贡献仍不清楚。本研究旨在使用临床 n-of-m 处理器，在动态语音刺激中直接量化这些贡献。
方法： 在两个实验中，使用辅音-元音三元组测量基频（F0）辨别能力。16 名（8 名女性）使用 n-of-m 策略的语后聋成人 CI 使用者参与了实验 1（F0 范围 76-242 Hz）。其中 5 名（3 名女性）还参与了实验 2（F0 范围 242-768 Hz）。刺激以声学方式或通过直接刺激呈现。对于后者，脉冲模式使用参与者自己的设置预先录制，并加以修改以抑制时间或频谱线索。
结果： 在实验 1 中，时间抑制显著降低了 F0 辨别能力。频谱抑制仅降低了部分参与者的 F0 辨别能力，而频谱和时间抑制联合则进一步降低了表现。相反，在实验 2 中，频谱抑制导致 F0 辨别能力下降，而时间抑制没有影响。对未修改刺激的分析表明，随着 F0 增加，时间线索的可用性降低，频谱线索的可用性增加。
结论： 这种新颖的预录制和流式传输方法有效地将真实刺激模式与脉冲级别的精确控制相结合。我们的结果表明，在音高辨别中，语后聋成人 CI 使用者主要依赖最可用的线索，而这取决于 F0。在典型男性至女性声音范围内辨别 F0 时，时间线索占主导；而在典型女性至儿童声音范围内，频谱线索往往占主导。
英文摘要
PURPOSE: The relative contributions of spectral and temporal cues to voice pitch perception in cochlear implant (CI) users remain unclear. This study aimed to directly quantify these contributions in dynamic speech stimuli with clinical n-of-m processors.
METHODS: Fundamental frequency (F0) discrimination was measured using consonant-vowel triplets in two experiments. Sixteen (eight female) postlingually deaf adult CI users with n-of-m strategies participated in experiment 1 (F0 range 76-242 Hz). Five (three female) also participated in experiment 2 (F0 range 242-768 Hz). Stimuli were presented acoustically or via direct stimulation. For the latter, pulse patterns were recorded in advance using the participants' own settings and modified to suppress temporal or spectral cues.
RESULTS: In experiment 1, temporal suppression drastically decreased F0 discrimination. Spectral suppression decreased the F0 discrimination of only some participants, while spectral and temporal suppression combined decreased performance further. Conversely, in experiment 2, spectral suppression caused a drop in F0 discrimination while temporal suppression had no effect. Analysis of the unaltered stimuli showed that with increasing F0, temporal cues decreased and spectral cues increased in availability.
CONCLUSION: The novel prerecording and streaming method effectively combines realistic stimulation patterns with precise control at the pulse level. Our results indicate that in voice pitch discrimination, postlingually deafened adult CI users rely predominantly on the most available cue, which depends on the F0. Temporal cues dominate when discriminating F0s within the typical male to female voice range, while spectral cues tend to dominate within the typical female to child voice range.