Evidence map›Paper›PMID 40796558›Full record

ArticleNature communications2025

Time cell sequences during delay intervals are not dependent on brain state and do not support hippocampus-dependent working memory.

Li Yuan, Jose F Figueroa, Ameen Khan, Gautam Narayan, Jill K Leutgeb, Stefan Leutgeb

Abstract read
In one paragraph

Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Li YuanNeurobiology Department, School of Biological Sciences, University of California San Diego, La Jolla, CA, USA.
Jose F FigueroaNeurobiology Department, School of Biological Sciences, University of California San Diego, La Jolla, CA, USA.ORCID http://orcid.org/0000-0002-3327-4484
Ameen KhanNeurobiology Department, School of Biological Sciences, University of California San Diego, La Jolla, CA, USA.
Gautam NarayanNeurobiology Department, School of Biological Sciences, University of California San Diego, La Jolla, CA, USA.ORCID http://orcid.org/0009-0007-3632-4831
Jill K LeutgebNeurobiology Department, School of Biological Sciences, University of California San Diego, La Jolla, CA, USA. jleutgeb@ucsd.edu.ORCID http://orcid.org/0000-0002-2014-842X
Stefan LeutgebNeurobiology Department, School of Biological Sciences, University of California San Diego, La Jolla, CA, USA. sleutgeb@ucsd.edu.ORCID http://orcid.org/0000-0003-3367-6536

Funding

Memory processing after neuron loss in the entorhinal cortex and hippocampusR01NS086947 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI LEUTGEB, STEFAN · 2014 to 2024
$3.9M
Dependence of memory on precisely coordinated oscillationsR01NS102915 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Stefan Leutgeb · 2017 to 2026
$3.1M
Mechanisms of abeta induced dysfunction in hippocampal neuronal circuitryR01NS084324 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KOO, EDWARD H., LEUTGEB, STEFAN · 2014 to 2018
$2.7M
Connectivity and function of microcircuits in the superficial layers of the entorhinal cortexR01NS097772 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI LEUTGEB, STEFAN, LIM, BYUNGKOOK · 2017 to 2021
$2.0M
Hippocampal network mechanisms for memory-guided behaviorR01MH119179 · NIMH · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI LEUTGEB, JILL K · 2019 to 2023
$1.8M
NIMH NIH HHS R01 MH119179NINDS NIH HHS R01 NS084324NINDS NIH HHS R01 NS086947NINDS NIH HHS R01 NS097772NINDS NIH HHS R01 NS102915
6 · The paper itself

Abstract

Working memory (WM) is essential for performing cognitive tasks, and sequentially active hippocampal cells over many seconds ('time cells') have been observed during WM retention. Time cells predominantly occur when neural activity oscillates at theta frequency. To examine whether time cells during WM maintenance depend on ongoing theta oscillations, we controlled the persistence of theta during 10 s and 30 s delay intervals by either having rats run or rest, which resulted in conditions with and without persistent theta oscillations. In either condition, reliable time cells were limited to only the first few seconds of the delay interval while a second population of constitutively active cells emerged during the remainder of the delay period, neither of which were memory-related. Our results show that hippocampal sequential activity patterns are short-lasting and uninformative for WM, and that WM retention over more than ~5 s needs to include mechanisms other than hippocampal time cells.

Indexed as

HippocampusMemory, Short-TermNeuronsAnimalsMaleRatsRats, Long-EvansTheta RhythmTime Factors

Identifiers

PMID40796558
PMCPMC12343883

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.