大脑压力的起伏:扩展三重网络假设
Gina-Isabelle Henze1, Marina Giglberger2, Christoph Bärtl1
1Research Division of Mind and Brain, Department of Psychiatry and Psychotherapy CCM, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; German Center for Mental Health (DZPG), Partner Site Berlin - Potsdam, Germany; Institute of Psychology, University of Regensburg, Regensburg, Germany.
Biological psychiatry. Cognitive neuroscience and neuroimaging
|August 24, 2025
概括
这项研究揭示了心理压力期间突出,默认模式和中央执行网络之间的复杂相互作用. 研究结果表明这些网络参与应激反应,任务执行,并可能表明弹性,观察到与年龄相关的差异.
科学领域:
- 神经科学
- 心理学
- 精神病学
背景情况:
- 三重网络假设认为心理压力处理涉及突出网络 (SN) 和默认模式网络 (DMN) 在中央执行网络 (CEN) 上占主导地位.
- 之前的研究表明,在应激反应和任务执行方面存在差异性网络参与,并可能有性别特异性影响.
研究的目的:
- 使用功能磁共振成像 (fMRI) 测试和扩展心理社会压力处理的三重网络假设.
- 研究SN,DMN和CEN的神经反应与荷尔蒙,心血管,情感和表现结果之间的关联.
- 检查神经和压力反应之间的性别特异关联.
主要方法:
- 对459个ScanSTRESS数据集 (222个女性) 进行了大规模分析,并进行了统一的预处理.
- 分析了功能磁共振成像 (fMRI) 数据,以评估心理压力期间的网络活动.
- 进行了基于任务的连接分析以确认网络参与.
主要成果:
- 结果显示了与压力标志物和性能相关的SN,DMN和CEN的复杂激活和停用.
- 随着年龄的增长,新的年龄效应显示了DMN激活的增加,而暴露时间效应表明激活的减少随着更长的压力持续时间.
- 确定了性别特异性模式,连接分析证实了这三个网络的参与.
结论:
- 提出了一个差异化的三重网络假设,将SN/DMN与压力反应和CEN/DMN与任务处理联系起来.
- 随着年龄的增长,DMN的下调能力可能会降低.
- 暴露时间效应被认为是一种潜在的弹性生物标志物.
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