Object and object-memory representations across the proximodistal axis of CA1
Object and object-memory representations across the proximodistal axis of CA1
复制标题
CA1 近远轴上的对象和对象记忆表示
DOI:
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
J. Ainge
中科院分区:
文献类型:
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作者:
Brianna Vandrey;J. Ainge
Episodic memory requires information about objects to be integrated into a spatial framework. Place cells in the hippocampus encode spatial representations of objects that could be generated through signalling from the entorhinal cortex. Projections from lateral and medial entorhinal cortex to the hippocampus terminate in distal and proximal CA1, respectively. We recorded place cells in distal and proximal CA1 as rats explored an environment that contained objects. Place cells in distal CA1 demonstrated higher measures of spatial tuning and expressed place fields closer to objects. Further, remapping to object displacement was modulated by place field proximity to objects in distal, but not proximal CA1. Finally, representations of previous object locations were more precise in distal CA1. Our data suggest that lateral entorhinal cortex inputs to the hippocampus support spatial representations that are more precise and responsive to objects in cue-rich environments. This is consistent with functional segregation in the entorhinal-hippocampal circuits underlying object-place memory.
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