在使用逆侧助听器的耳植入者中定位低频和高频声音
Philipp Zelger1, Patrick Zorowka1, Joachim Schmutzhard2
1Department for Hearing, Speech and Voice Disorders.
概括
耳植入物 (CI) 和助听器 (HA) 用户可以定位声音,但有显著的错误,特别是低频声音. 单边的HA使用本身并不能实现有效的声音定位.
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:
- 在使用一只耳朵的耳植入物 (CI) 和另一侧的助听器 (HA) 的个体中,声音定位能力被部分恢复.
- 在这些双模听器中,双耳处理显示出一些有效性,尽管刺激类型不同 (电气与声学).
研究的目的:
- 研究CI和HA使用者的双耳听力机制.
- 在双模听条件下评估低频和高频声音的声音定位精度.
主要方法:
- 采用主体内部设计来测试水平平面中的声音定位.
- 十名患有不对称听力损失的参与者 (较差耳朵的CI,对侧耳朵的HA) 进行了测试.
- 使用角误差和正确的定位分数测量声音定位精度,在无声室中测量宽带,高频和低频噪声刺激.
主要成果:
- 在双模条件下,宽带和高频噪声的中位角误差为40°,低频噪声的中位角误差为47°.
- 在单边HA条件下,中位角误差在78°显著更高.
- 对大多数参与者来说,仅使用单边HA的声音定位是不可行的.
结论:
- 双调听器 (CI + HA) 显示出在不同频率的声音本地化能力.
- 与双边CI使用者或单面CI聋人个体报告的数据相比,双边CI听者的定位精度较低.
- 单独单方面使用HA时,无法实现有效的声音定位.
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