Evidence map›Paper›PMID 37906591›Full record

ArticleCell reports2023

Minute-scale periodicity of neuronal firing in the human entorhinal cortex.

Zahra M Aghajan, Gabriel Kreiman, Itzhak Fried

Abstract read
In one paragraph

Article in Cell reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

  1. Article
  2. Review
  3. Neural Representation of Episodic Time.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Review
  4. Sustained Hippocampal Theta Oscillations Reflect Experience-Dependent Learning in Backward Temporal Order Memory Retrieval.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  5. Article
  6. Article
  7. Transitional gradation and the distinction between episodic and semantic memory.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Review
  8. Article
  9. Article
  10. Article
  11. Spontaneous α Brain Dynamics Track the Episodic "When".The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    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

3 authors.

Zahra M AghajanDepartment of Neurosurgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA. Electronic address: zahraa@g.ucla.edu.
Gabriel KreimanChildren's Hospital, Harvard Medical School, Boston, MA 02115, USA; Center for Brains, Minds and Machines, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Itzhak FriedDepartment of Neurosurgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA; Department of Psychiatry and Biobehavioral Sciences, Jane and Terry Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA 90095, USA; Faculty of Medicine, Tel Aviv University, Tel-Aviv 69978, Israel. Electronic address: ifried@mednet.ucla.edu.

Funding

Decoding and Selective Modulation of Human Memory During Awake/Sleep CyclesU01NS123128 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI FRIED, ITZHAK · 2021 to 2025
$7.1M
Using Direct Brain Stimulation to Study Cognitive ElectrophysiologyU01NS113198 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI KAHANA, MICHAEL JACOB · 2019 to 2023
$6.9M
Mechanisms of Memory Enhancement by Deep Brain Stimulation in HumansR01NS084017 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI FRIED, ITZHAK · 2013 to 2022
$4.7M
Memory consolidation during sleep studied by direct neuronal recording and stimulation inside human brainU01NS108930 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI FRIED, ITZHAK · 2018 to 2019
$1.9M
NINDS NIH HHS R01 NS084017NINDS NIH HHS U01 NS108930NINDS NIH HHS U01 NS113198NINDS NIH HHS U01 NS123128
6 · The paper itself

Abstract

Grid cells in the entorhinal cortex demonstrate spatially periodic firing, thought to provide a spatial map on behaviorally relevant length scales. Whether such periodicity exists for behaviorally relevant time scales in the human brain remains unclear. We investigate neuronal firing during a temporally continuous experience by presenting 14 neurosurgical patients with a video while recording neuronal activity from multiple brain regions. We report on neurons that modulate their activity in a periodic manner across different time scales-from seconds to many minutes, most prevalently in the entorhinal cortex. These neurons remap their dominant periodicity to shorter time scales during a subsequent recognition memory task. When the video is presented at two different speeds, a significant percentage of these temporally periodic cells (TPCs) maintain their time scales, suggesting a degree of invariance. The TPCs' temporal periodicity might complement the spatial periodicity of grid cells and together provide scalable spatiotemporal metrics for human experience.

Indexed as

Entorhinal CortexNeuronsHumansNeural PathwaysPeriodicityRecognition, PsychologyCP: Neuroscienceelectrophysiologyhuman neuronsmedial temporal lobememoryperiodic time cellstemporal representationtimetime coding

Identifiers

PMID37906591
PMCPMC11552097

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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.