Department of Psychology and Neuroscience, Boston College, 300 McGuinn Hall, 140 Commonwealth Ave, Chestnut Hill, MA 02467, USA.
Trends Cogn Sci. 2020 Jun;24(6):451-465. doi: 10.1016/j.tics.2020.03.006. Epub 2020 Apr 24.
Our ability to remember or imagine specific events involves the construction of complex mental representations, a process that engages cortical and hippocampal regions in a core posterior medial (PM) brain network. Existing theoretical approaches have described the overarching contributions of the PM network, but less is known about how episodic content is represented and transformed throughout this system. Here, we review evidence of key functional interactions among PM regions and their relation to the core cognitive operations and representations supporting episodic construction. Recent demonstrations of intranetwork functional diversity are integrated with existing accounts to inform a network-based model of episodic construction, in which PM regions flexibly share and manipulate event information to support the variable phenomenology of episodic memory and simulation.
我们记忆或想象特定事件的能力涉及到复杂的心理表象的构建，这一过程涉及到大脑皮质和海马区的核心后内侧（PM）脑网络。现有的理论方法已经描述了 PM 网络的总体贡献，但对于情节内容如何在整个系统中得到表示和转换知之甚少。在这里，我们回顾了 PM 区域之间关键功能相互作用的证据，以及它们与支持情节构建的核心认知操作和表示的关系。最近对内部网络功能多样性的演示与现有的解释相结合，为情节构建的基于网络的模型提供了信息，在这个模型中，PM 区域灵活地共享和操作事件信息，以支持情节记忆和模拟的可变现象。
