听觉语言理解期间的半球网络动态及其对休息状态功能磁共振成像的临床影响
Atsuko Kurosu1, Harish RaviPrakash2, Ninet Sinaii3
1The Integrative Neuroscience of Communication Unit, National Institute on Deafness and Other Communication Disorders, Bethesda, MD.
Journal of speech, language, and hearing research : JSLHR
|January 9, 2026
概括
在语言处理过程中的功能连接 (FC) 模式在静止状态 (rs-fMRI) 和基于任务的 (tb-fMRI) 扫描之间有所不同. 动态FC网络在听觉任务中表现出比静止时更大的波动,特别是在左半球.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 医疗成像医学成像
背景情况:
- 对神经行为建模的兴趣日益增长,需要理解语言处理中的功能连接 (FC).
- 以前的研究表明静态rs-fMRI和tb-fMRI可能可以互换用于绘制语言区域的地图,这导致一些人质疑tb-fMRI在临床环境中的必要性.
- 语言处理涉及对计算模型至关重要的时间动态,但静态成像可能无法捕捉这些细微差别.
研究的目的:
- 在健康参与者的听觉理解过程中,检查语言神经网络在休息状态功能性MRI (rs-fMRI) 和基于任务的fMRI (tb-fMRI) 期间的稳定性和时间动态.
- 为了比较rs-fMRI和tb-fMRI之间的动态FC模式,以确定它们是否可互换用于语言网络分析.
主要方法:
- 23名参与者接受了rs-fMRI,12名参与者在执行听觉描述任务时接受了tb-fMRI.
- 动态FC使用滑动尺度时间序列相关性估计.
- 使用斯皮尔曼相关性与邦费罗尼纠正来确定统计学上显著的全脑动态网络.
主要成果:
- 与静止状态条件 (rs-fMRI) 相比,动态FC网络在听觉任务 (tb-fMRI) 中表现出更显著的时间波动.
- 在tb-fMRI期间,在左半球内的特定共同网络中观察到动态FC的明显差异.
- 总共有59,831个数据点被分析,包括42,159个来自rs-fMRI,10,152个来自tb-fMRI,和7,520个重叠.
结论:
- 在rs-fMRI和tb-fMRI之间,参与语言处理的神经网络的时间动态明显不同,特别是在左半球.
- 这些时间差异代表了开发先进计算模型的关键特征.
- 了解这些动态FC区别可能会提高模型对中枢神经系统损伤后临床结果的预测准确性.
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