@article{oai:oist.repo.nii.ac.jp:00001884,
 author = {Tanaka, Kazumasa Z.},
 journal = {Neuroscience Research},
 month = {May},
 note = {The hippocampus is essential for some types of memory, but its specific role remains conjectural. While studies on place cells have supported the hypothesis that the hippocampus provides a spatial substrate for episodic memory, recent engram studies have shown that optogenetic activation of a subset of hippocampal neurons that lack a temporal structure of the spike sequences can also induce memory-associated behavior. In this short review, I discuss the various lines of research that have led to different views of the role of the hippocampus in memory and propose a plausible interpretation of the findings that incorporates two influential theories.},
 title = {Heterogeneous representations in the hippocampus},
 year = {2020}
}