The Visual Scene Network and Hippocampus Represent Spatial Boundary Structures for Temporal Episodic Memory Organization.

IF 3.1 3区 医学 Q2 NEUROSCIENCES
Yu Jin Rah, Jung Han Shin, Sang Ah Lee
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引用次数: 0

Abstract

Crossing a spatial boundary such as a doorway plays an important role in the temporal organization of episodic memory. However, despite the wealth of evidence showing that visual boundary structures in scenes affect our representation of space, no studies have tested the possibility that they also function as event boundaries even without active navigation. In this study, we used a nonnavigational scene-based memory task that required participants to remember a sequence of objects moving to various baskets in a scene. In the boundary condition, there was a freestanding boundary in the middle of the room, low enough to see the rest of the room beyond it. We found that the additional boundary within the scene was sufficient to trigger a larger response in the cortical visual scene network, the hippocampus, and their coordinated activity. These results suggest that active navigation across a spatial boundary such as a doorway into another room is not necessary to form an event boundary and that a visual representation of boundaries is sufficient to influence the organization of a hippocampal episodic memory.

视觉场景网络和海马代表了时空记忆组织的空间边界结构
跨越门廊等空间边界在记忆的时间组织中起着重要作用。然而,尽管有大量证据表明场景中的视觉边界结构会影响我们对空间的表征,但还没有研究测试过它们在没有主动导航的情况下也能作为事件边界发挥作用的可能性。在这项研究中,我们使用了一个非导航场景记忆任务,要求参与者记住一个场景中物体移动到不同篮子的序列。在边界条件下,房间中央有一个独立的边界,边界很低,可以看到边界外房间的其他部分。我们发现,场景中的额外边界足以引发大脑皮层视觉场景网络、海马体及其协调活动的更大反应。这些结果表明,主动导航穿过空间边界(如进入另一个房间的门口)并非形成事件边界的必要条件,而边界的视觉表征足以影响海马表观记忆的组织。
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来源期刊
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience 医学-神经科学
CiteScore
5.30
自引率
3.10%
发文量
151
审稿时长
3-8 weeks
期刊介绍: Journal of Cognitive Neuroscience investigates brain–behavior interaction and promotes lively interchange among the mind sciences.
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