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将单耳和双耳噪声添加到双耳听力任务的效果
Carrie M Clancy1, Alyssa Davidson2,3, Mark Borgstrom4
1Department of Speech, Language, and Hearing Sciences, The University of Arizona, Tucson, Arizona.
Journal of the American Academy of Audiology
|September 25, 2023
概括
将噪音添加到Dichotic Digits Test (DDT) 中,使其变得更加具有挑战性,减少了天花板效应. 这种修改可能会改善在临床环境中检测微妙的中央听觉神经系统 (CANS) 功能障碍.
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.
- 语音语言病理学 语音语言病理学
背景情况:
- 迪霍斯数字测试 (DDT) 是评估中枢听觉神经系统 (CANS) 功能障碍的标准临床工具.
- 虽然有效,但DDT表现出天花板效应,限制其对轻微CANS损伤的敏感性.
研究的目的:
- 研究将单声和双声语音频谱噪声添加到DDT的影响.
- 目标是增加测试难度并减轻上限效应,以改善CANS评估.
主要方法:
- 在20名成年参与者中,采用了一种实验性的重复测量设计.
- 参与者完成了标准的DDT和修改版本的双声,单声右声和单声左声噪声在不同的信号噪声比率.
- 数据分析涉及混合模型对差异的分析,以评估DDT评分指数上的噪声影响.
主要成果:
- 增加噪音显著降低了所有DDT指数 (特定于耳朵和总体) 的性能得分.
- 在 monaural 和 binaural 噪音条件之间观察到统计学上显著的差异,这表明 binaural 处理在噪音中的潜在好处.
- 这些发现表明,噪音增强了对CANS的测试征税性质.
结论:
- 将噪音添加到话听任务中会增加它们的难度.
- 进一步研究噪音中的二言听力可能会提高临床CANS评估的灵敏度.
- 这种方法可能会导致对审计系统完整性的更精确的评估.
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