默认模式网络在记忆社会自传记忆时自我表现的不同方面所起的作用
Azusa Katsumi1, Saeko Iwata1,2, Takashi Tsukiura1
1Kyoto University.
Journal of cognitive neuroscience
|March 25, 2024
概括
这项研究揭示了不同类型的社会自传记忆 (AM) 的不同大脑网络活动. 默认模式网络 (DMN) 显示了与人际关系自我 (IS) 和社会价值自我 (SS) 相关的AM的特定模式.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 社会心理学 社会心理学
背景情况:
- 自传记忆 (AM) 涉及自我表现,在社会背景中至关重要.
- 自我表现被分为人际自我 (IS) 或社会价值自我 (SS).
- 默认模式网络 (DMN) 涉及到自我代表,但其子系统在社交AM中的作用尚不清楚.
研究的目的:
- 调查DMN子系统对与IS相关的和与SS相关的AMS的差异性贡献.
- 阐明AM中社会自我表现的基础的神经机制.
主要方法:
- 功能性磁共振成像 (fMRI) 用于健康的年轻人.
- 多变量模式分析 (MVPA) 和功能连接分析在DMN子系统 (中线核心,MTL,dmPFC) 上进行.
- 参与者回顾了与IS,SS和非社会自我的相关的AM.
主要成果:
- 所有DMN子系统都区分了与IS相关的与非社交的AM,具有显著的功能连接.
- 中线核心和dmPFC子系统区分了SS相关的非社会AM,但不是MTL子系统.
- 在DMN子系统中观察到与IS和SS相关的AM的特定功能连接模式.
结论:
- 在DMN中的可分离的神经机制有助于社会AM中自我表现的不同方面.
- 这些发现凸显了DMN子系统在处理社会自我相关记忆方面的专门作用.
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