DeDe宝
(2023-06-25 23:08):
#paper doi https://doi.org/10.1038/s41467-023-35967-6,Nature Communications,2023, Goal-oriented representations in the human hippocampus during planning and navigation.在之前的研究中,海马被认为与长时记忆、位置表征相关,然而,最近认知和系统神经科学的研究表明,海马可能通过形成认知地图支持计划、想象和导航。在本研究中,研究者探究人类在目标导向导航任务期间的海马活动模式,以研究如何将上下文和目标纳入导航计划的构建和执行中。在计划阶段,相同背景和目标的路线之间的海马模式相似性增强。在导航阶段,海马前瞻性激活。
Goal-oriented representations in the human hippocampus during planning and navigation
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Abstract:
Recent work in cognitive and systems neuroscience has suggested that the hippocampus might support planning, imagination, and navigation by forming cognitive maps that capture the abstract structure of physical spaces, tasks, and situations. Navigation involves disambiguating similar contexts, and the planning and execution of a sequence of decisions to reach a goal. Here, we examine hippocampal activity patterns in humans during a goal-directed navigation task to investigate how contextual and goal information are incorporated in the construction and execution of navigational plans. During planning, hippocampal pattern similarity is enhanced across routes that share a context and a goal. During navigation, we observe prospective activation in the hippocampus that reflects the retrieval of pattern information related to a key-decision point. These results suggest that, rather than simply representing overlapping associations or state transitions, hippocampal activity patterns are shaped by context and goals.
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