尖端电极的选择性刺激对耳植入体接受者的时间音调感知的影响
Evelien De Groote1, Robert P Carlyon1, John M Deeks1
1Cambridge Hearing Group, Medical Research Council Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, CB2 7EF, United Kingdom.
The Journal of the Acoustical Society of America
|September 30, 2024
概括
在耳植入物中选择性顶端刺激并没有改善时间音调感知. 听觉神经的健康状况,用极性效应来衡量,同样没有与音调感知极限的相关性.
科学领域:
- 听力学 听力学是指听力学.
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
背景情况:
- 耳植入物 (CIs) 的目的是通过电刺激听觉神经来恢复听力.
- 时间音调感知对于理解语音和音乐至关重要.
- 优化CI刺激策略可能会提高音调感知,特别是在顶峰区域.
研究的目的:
- 调查选择性顶端电极刺激是否能改善MED-EL CI用户的时间音调感知.
- 确定任何观察到的改善是否与听觉神经的存活相关.
主要方法:
- 评估了三种刺激条件:单个尖端,单个中间阵列和多尖端电极刺激.
- 评估时空音调感知使用速率-音调排名高达每秒981脉冲.
- 测量了极性效应 (PE) 以评估外围神经健康.
主要成果:
- 与其他条件相比,单电极顶部刺激没有增强时间音调感知的上限.
- 极性效应在顶点和中间阵列刺激之间没有差异.
- 在极性效应和时角的上限之间没有发现任何相关性.
结论:
- 选择性角刺激似乎没有改善这个IC用户队列的时间音调感知.
- 需要进一步的研究来探索替代策略,以增强在尾耳区域的音调感知.
- 听觉神经的健康状况,如PE所示,可能与时间音调感知极限没有直接联系.
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