在双重任务范式下通过瞳孔测量测量倾听力度:听觉光谱分辨率的影响
Fahrettin Deniz Senli1,2, Aysegul Ozkan3,4, Cengiz Acarturk4
1Department of Audiology, Yildirim Beyazit University, Ankara, Türkiye. fdenizsenli@gmail.com.
概括
在模拟的耳植入式语音中,降低光谱分辨率增加了听力努力,通过反应时间和瞳孔膨胀来衡量. 这些生理反应表明认知负载,即使语音可理解性保持完整.
科学领域:
- 听觉神经科学 听觉神经科学
- 语音感知 语音感知
- 人与计算机的交互
背景情况:
- 听觉光谱分辨率对于语音理解至关重要.
- 耳植入物可以降低光谱信息,影响语音感知.
- 倾听的努力是听力假肢成功的一个重要因素.
研究的目的:
- 为了研究听觉光谱分辨率和倾听力度之间的关系.
- 在模拟的耳植入物条件下,使用客观的生理测量来评估听力.
主要方法:
- 在21名听力正常的参与者中,采用了双重任务模式.
- 噪声编码的句子与不同的频道数量 (4-12) 模拟退化语音.
- 用二次任务反应时间和瞳孔膨胀来量化倾听力度.
主要成果:
- 降低光谱分辨率导致反应时间和瞳孔扩张的增加,这意味着更高的听力.
- 瞳孔扩张在所有退化条件中都增加,而反应时间仅在最退化条件 (4和6通道) 中受到显著影响.
- 语音可理解性没有预测听力努力的测量,反应时间和瞳孔大小之间的相关性很弱.
结论:
- 倾听的努力是多维的,生理测量揭示了超越行为表现的认知负载.
- 综合行为和生理测量对于彻底评估听力努力在受损的语音感知是必不可少的.
- 研究结果强调了听力障碍者使用耳植入物时光谱分辨率降低对听力障碍者的认知后果.
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