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  Sequence memory in the hippocampal-entorhinal region

Bellmund, J. L. S., Polti, I., & Doeller, C. F. (2020). Sequence memory in the hippocampal-entorhinal region. Journal of Cognitive Neuroscience, 32(11), 2056-2070. doi:10.1162/jocn_a_01592.

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 Creators:
Bellmund, Jacob L. S.1, Author              
Polti, Ignacio2, Author
Doeller, Christian F.1, 2, Author              
Affiliations:
1Department Psychology (Doeller), MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_2591710              
2Egil and Pauline Braathen and Fred Kavli Centre for Cortical Microcircuits, Kavli Institute, Norwegian University of Science and Technology, Trondheim, Norway, ou_persistent22              

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 Abstract: Episodic memories are constructed from sequences of events. When recalling such a memory, we not only recall individual events, but we also retrieve information about how the sequence of events unfolded. Here, we focus on the role of the hippocampal–entorhinal region in processing and remembering sequences of events, which are thought to be stored in relational networks. We summarize evidence that temporal relations are a central organizational principle for memories in the hippocampus. Importantly, we incorporate novel insights from recent studies about the role of the adjacent entorhinal cortex in sequence memory. In rodents, the lateral entorhinal subregion carries temporal information during ongoing behavior. The human homologue is recruited during memory recall where its representations reflect the temporal relationships between events encountered in a sequence. We further introduce the idea that the hippocampal–entorhinal region might enable temporal scaling of sequence representations. Flexible changes of sequence progression speed could underlie the traversal of episodic memories and mental simulations at different paces. In conclusion, we describe how the entorhinal cortex and hippocampus contribute to remembering event sequences—a core component of episodic memory.

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Language(s): eng - English
 Dates: 2020-05-202020-06-122020-11
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1162/jocn_a_01592
Other: epub 2020
PMID: 32530378
 Degree: -

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Title: Journal of Cognitive Neuroscience
Source Genre: Journal
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Publ. Info: Cambridge, MA : MIT Press Journals
Pages: - Volume / Issue: 32 (11) Sequence Number: - Start / End Page: 2056 - 2070 Identifier: ISSN: 0898-929X
CoNE: https://pure.mpg.de/cone/journals/resource/991042752752726