在观看不愉快的刺激视频时,功能连接网络中的分离增加:一个通用的心理生理相互作用分析
Yuqian Ni1, Xia Zheng2, Richard Betzel3
1The Media School, Indiana University Bloomington, Bloomington, Indiana, USA.
Brain connectivity
|January 24, 2024
概括
观看不愉快,令人兴奋的视频显著改变大脑的功能连接 (FC),导致网络分离的增加,特别是在关联系统中. 这表明,由于高度厌恶的刺激,大脑状态发生了变化.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 情感神经科学是一种神经科学.
背景情况:
- 功能连接 (FC) 属性,包括网络集成和分离,与注意力和运动任务等人类行为有关.
- 以前的研究表明,注意力增加了整合,而简单的运动任务增加了分离.
研究的目的:
- 调查如何查看视频片段的价值和唤起不同影响基于任务的FC网络的集成-分离特性.
- 探索对不同情感刺激的反应中大脑网络动态的变化.
主要方法:
- 使用通用心理生理相互作用 (gPPI) 分析对开放数据集的分析.
- 应用网络分析和社区检测来检查视频观看期间的大脑网络动态.
- 根据情感价值 (不愉快/愉快) 和兴奋 (兴奋/平静) 来对视频进行分类.
主要成果:
- 不愉快的唤起视频导致了较大的FC偏离基线 (任务诱导的FC偏离[tiFCd]).
- 与其他视频类型相比,这些视频会使大脑陷入更隔离的状态.
- 在关联系统中特别观察到分离的增加,而不是感觉运动系统.
结论:
- 不愉快的唤醒内容会诱导一种独特的大脑状态,可能与脱离或提高警觉性有关.
- 将gPPI分析与社区检测和网络隔离措施相结合,可以增强对行为与大脑状态联系的理解.
- 情感刺激显著影响大脑网络动态,特别是整合和隔离之间的平衡.
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