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相关实验视频

Updated: May 17, 2025

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms

Published on: March 21, 2019

在自然主义输入过程中,时间依赖的无尺度大脑动态.

Philipp Klar¹, Yasir Çatal², Gerhard Jocham³

¹Faculty of Mathematics and Natural Sciences, Institute of Experimental Psychology, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany; Institute of Neuroscience and Medicine, Brain & Behaviour (INM-7), Research Centre Jülich, Jülich, Germany.

|May 10, 2025

概括

此摘要是机器生成的。

大脑是大脑的大脑.

关键词:

碎形动力学碎形动力学在ISC中,ISC是ISC.科目间的相关性没有规模的动态.光谱指数的指数是

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科学领域:

神经科学是一个神经科学.
物理物理学物理
信号处理信号处理

背景情况:

环境过程,包括感官输入,经常表现出权力法分布.
大脑的无尺度动力学及其对自然刺激的反应,特别是光谱指数 (β{\displaystyle t}),尚未完全理解.
研究大脑如何动态调整其光谱指数以适应不断变化的输入对于理解神经处理至关重要.

研究的目的:

在自然主义视听输入 (电影观看) 过程中,研究大脑中的动态,时间依赖的光谱指数 (β(t)).
为了检查大脑的动态光谱指数 (β(t)) 和早期感官区域的学科间相关性 (ISC(t)) 之间的关系.
为了确定大脑从内在转向刺激驱动的无尺度动态如何调节共享的大脑活动.

主要方法:

功能磁共振成像 (fMRI) 用于测量大脑活动.
计算了时间变化的受试者之间的相关性 (ISC) 来评估共享的大脑活动.
在休息和看电影期间,在视觉和听觉区域分析了依赖时间的光谱指数 (β(t)) 使用7特斯拉人类连接组项目数据集.

主要成果:

大脑的光谱指数 (β(t)) 在自然主义输入过程中与休息相比,在感官区域显示出不同的时间结构.
在观看电影期间,在依赖时间的光谱指数 (β(t)) 和主体间相关性 (ISC(t)) 之间发现了正相关性.
由休息到看电影的βt变化区分的受试者群体显示出不同的βt-ISCt相关性,表明共享的大脑活动通过无尺度动态的调制.

结论:

大脑在自然主义的视听输入过程中表现出动态的,依赖时间的,无尺度的动态.
大脑的依赖时间的光谱指数 (β(t)) 和主体间相关性 (ISC(t)) 之间存在正相关性,这表明更高的指数与更大的共享大脑活动相关.
大脑在对刺激的反应中适应其无尺度动态,会影响传感输入在神经活动上被刻印的程度.