测量行为和电生理学掩盖水平差异的可行性与无意义的音节刺激
Lauren K Dillard1,2, Emily M Wilson1, So Eun Park1
1Department of Communication Sciences & Disorders, University of Wisconsin-Madison, Madison, Wisconsin.
Journal of the American Academy of Audiology
|September 12, 2024
概括
这项研究发现,无意义的音节 /α/ 对于测量行为和电生理学掩盖水平差异 (MLD) 是有效的. 这些发现支持使用语音刺激来进行更生态有效的MLD评估.
科学领域:
- 听觉神经科学 听觉神经科学
- 语音感知 语音感知
- 精神声学是一种精神声学.
背景情况:
- 掩盖水平差异 (MLD) 可以通过皮质听觉唤起潜力 (CAEPs; eMLD) 从行为 (vMLD) 或电生理学上进行评估.
- 通过使用基于语音的刺激,特别是无意义的音节来提高MLD测量的生态有效性.
研究的目的:
- 确定使用语音刺激测量vMLD和eMLD的可行性.
- 为了确定哪些特定的无意义音节刺激 (/α/, /dα/, /di/, /tα/, /wα/) 对于vMLD和eMLD测量都是最有效的.
主要方法:
- 一项描述性可行性试点研究,涉及17名正常听力值的年轻成年人.
- 使用类似的方法测量行为和电生理学MLD,其中无意义音节刺激 (/α/, /dα/, /di/, /tα/, /wα/) 呈现为连续语音加权噪音.
- 通过评估可测量的vMLDs和eMLDs的生产来评估可行性,考虑到大小,可以忽略的值和分布特征.
主要成果:
- 无意义的音节 /α/为vMLDs (6.0 dB) 和 eMLDs (9.6 dB) 产生了最高的平均值,没有可以忽略的MLDs和足够的分布分布.
- /wα/也产生了大量的vMLD (7.5 dB) 和充足的eMLD (6.9 dB),尽管其eMLD分布是右倾的.
- 其他测试的刺激导致了较低的平均vMLD大小和几个可以忽略不计的vMLD.
结论:
- 无意义的音节是记录行为和电生理学MLD的可行的刺激.
- 无意义的音节 /α/ 在行为和电生理学测量模式中显示出最大的实用性.
- 观察到的MLDs在不同模式之间的差异可能源于高频刺激组件可听度的变化.
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