在初级和非初级听力皮层中进行FMRI语音跟踪,同时倾听杂的场景
Lars Hausfeld1,2, Iris M H Hamers3,4, Elia Formisano3,5,6
1Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, 6200 MD, Maastricht, The Netherlands. lars.hausfeld@maastrichtuniversity.nl.
Communications biology
|September 30, 2024
概括
听觉皮层 (AC) 中的神经活动跟踪语音包裹. 使用7-特斯拉fMRI,这项研究揭示了初级和非初级AC区域如何处理听话语,即使有竞争的声音.
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
- 认知神经科学 认知神经科学
背景情况:
- 听力皮层 (AC) 中的神经活动在复杂的听力过程中跟踪语言的外.
- 之前的方法的空间分辨率有限,掩盖了初级与非初级交流区域的角色.
研究的目的:
- 调查初级和非初级听力皮层区域对语音跟踪的不同贡献.
- 通过使用高分辨率的fMRI检查大脑如何在有竞争性语音信号的情况下处理语音.
主要方法:
- 使用7特斯拉功能磁共振成像 (fMRI) 来测量大脑反应.
- 采用语音智能建模来分析与语音信封跟踪相关的神经活动.
- 在单音声与并发音声条件下比较大脑反应.
主要成果:
- 在双边的Heschl's gyrus (HG),右侧的中部上角 (mSTS) 和左侧的temporo-parietal junction (TPJ) 中观察到信封跟踪.
- 神经血管活动显示HG的正相关性和mSTS和TPJ与语音外的负相关性.
- HG跟踪了相关和非相关的语音,而mSTS专门代表了相关的语音信号,其强度与理解相关.
结论:
- 在持续的语音处理过程中,fMRI信号有效地跟踪皮质反应和注意力效应.
- 初级 (HG) 和非初级 (mSTS) 听力皮层区域以不同的方式处理正在进行的语音,平衡声学和语言信息.
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