临床前方法来确定浮动质量传感器在前向和逆向刺激中的输出
David Stauske1, Hamidreza Mojallal1, Nils Prenzler2
1MED-EL, Business Unit Vibrant, Innsbruck, Austria.
Hearing research
|January 8, 2026
概括
浮式质量转换器 (FMT) 显示了圆窗 (RW) 刺激的保留频率特征,尽管输出低于短过程 (SP) 刺激. 耳内压力差 (ICPD) 在RW评估中更准确.
科学领域:
- 生物医学工程 生物医学工程
- 听觉神经科学 听觉神经科学
- 声学 声学 在声学方面
背景情况:
- 浮式质量转换器 (FMT) 是一种用于听觉植入物的新型设备.
- 评估不同刺激模式的FMT效率对于临床应用至关重要.
- 了解声音传输特征是恢复听力的关键.
研究的目的:
- 评估FMT在前进 (包括短过程,SP) 和反向 (圆窗,RW) 刺激模式中的声音传输效率.
- 为了比较用于FMT应用的不同合配置.
- 为了确定激光多普勒振动计 (LDV) 和内压差 (ICPD) 在评估FMT性能时的准确性.
主要方法:
- 使用LDV和ICPD进行FMT声传输的实验评估.
- 测试三种合配置:振动塑料-SP-合器,振动塑料-RW-合器和RW-精密合器.
- 评估与完整和破坏的骨链的逆刺激.
主要成果:
- 前向刺激 (SP) 显示输出从200 Hz增加到1.26 kHz,保持不变到8 kHz.
- 反向刺激 (RW) 呈现的共振峰值在1.5-2kHz,输出幅度比前向刺激低10-12dB.
- 在输出和可变性方面,RW精密合器表现优于振动塑形RW合器; ICPD对频率变化比LDV更敏感.
结论:
- LDV适用于前向刺激评估,而ICPD则更准确地用于反向刺激.
- 尽管输出较低,但RW刺激保留了频率特征,这表明当前向刺激是不可行的时,临床相关性.
- FMT显示出恢复听力的潜力,特别是在传统方法不适用的情况下.
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