取决于水平的皮质下脑电图,对连续语音的反应
Joshua P Kulasingham1, Hamish Innes-Brown2,3, Martin Enqvist4
1Automatic Control, Department of Electrical Engineering, Linköping University, 581 83 Linköping, Sweden joshua.kulasingham@liu.se.
eNeuro
|August 14, 2024
概括
这项研究表明,听觉脑干响应 (ABR) 及时响应功能 (TRFs) 随着语音强度的变化而变化. 这些发现支持使用自然语音用于听觉评估皮质下大脑活动.
科学领域:
- 神经科学是一个神经科学.
- 听觉神经科学 听觉神经科学
- 信号处理 信号处理
背景情况:
- 听觉脑干反应 (ABR) 使用脑电图 (EEG) 测量皮下活动.
- 在ABR中波V峰值对于临床听力评估至关重要,并且依赖于强度.
- 当前的方法使用非自然的刺激;自然的语音刺激提供了生态相关性.
研究的目的:
- 从连续语音中开发估计水平依赖的皮层下TRF的方法.
- 为了调查TRF波形是否会随着自然语言的刺激强度而变化.
- 验证使用自然语音进行涉及皮质下反应的听力评估.
主要方法:
- 从21名参与者收集了EEG数据,通过4个强度级别听连续语音.
- 开发了使用线性解卷方法估计水平依赖的皮层下TRF的方法.
- 评估了外围听觉模型,其中马色过器银行表现最好.
主要成果:
- 在大多数参与者中检测到皮层下TRF波V峰值的水平依赖性变化.
- 这些变化与点击ABR中观察到的依赖强度的变化一致.
- 大约6分钟的数据可能足以检测更高强度的效应.
结论:
- 下皮层TRF表现出与自然语言的强度依赖性特征.
- 简单的玛过器是水平依赖的皮层下TRF的合适预测器.
- 即使在自然语音强度波动的情况下,也可以检测到水平依赖的皮层下TRF.
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