Evidence map›Paper›PMID 34742943›Full record

ArticleNeuroImage2021

Neurons in the human medial temporal lobe track multiple temporal contexts during episodic memory processing.

Hye Bin Yoo, Gray Umbach, Bradley Lega

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in NeuroImage, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.1field-weighted citation impact, top 25% of its field
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

15 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Hippocampal Drift Rate Reflects the Temporal Organization of Memories.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
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  7. Heterogeneous tau deposition patterns in the preclinical stage link to domain-specific cognitive deficits.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
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  12. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Hye Bin YooDepartment of Neurological Surgery, University of Texas Southwestern, Dallas, TX 75390, USA.
Gray UmbachDepartment of Neurological Surgery, University of Texas Southwestern, Dallas, TX 75390, USA.
Bradley LegaDepartment of Neurological Surgery, University of Texas Southwestern, Dallas, TX 75390, USA. Electronic address: Bradley.Lega@utsouthwestern.edu.
Neurological Surgery · USThe University of Texas Southwestern Medical Center · US

Funding

Using deep brain stimulation of the parietal cortex to investigate the electrophysiology of human episodic memoryR01NS107357 · NINDS · UT SOUTHWESTERN MEDICAL CENTER · PI Bradley C Lega · 2018 to 2026
$3.6M
Targeted closed-loop intracranial brain-stimulation to improve episodic memoryR01NS106611 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI KAHANA, MICHAEL JACOB · 2019 to 2023
$3.1M
Behavioral and pharmacological manipulation of time cell activity in the human mesial temporal lobeR01NS125250 · NINDS · UT SOUTHWESTERN MEDICAL CENTER · PI Bradley C Lega · 2022 to 2026
$1.8M
NINDS NIH HHS R01 NS106611NINDS NIH HHS R01 NS107357NINDS NIH HHS R01 NS125250
6 · The paper itself

Abstract

Episodic memory requires associating items with temporal context, a process for which the medial temporal lobe (MTL) is critical. This study uses recordings from 27 human subjects who were undergoing surgical intervention for intractable epilepsy. These same data were also utilized in Umbach et al. (2020). We identify 103 memory-sensitive neurons in the hippocampus and entorhinal cortex, whose firing rates predicted successful episodic memory encoding as subjects performed a verbal free recall task. These neurons exhibit important properties. First, as predicted from the temporal context model, they demonstrate reinstatement of firing patterns observed during encoding at the time of retrieval. The magnitude of reinstatement predicted the tendency of subjects to cluster retrieved memory items according to input serial position. Also, we found that spiking activity of these neurons was locked to the phase of hippocampal theta oscillations, but that the mean phase of spiking shifted between memory encoding versus retrieval. This unique observation is consistent with predictions of the "Separate Phases at Encoding And Retrieval (SPEAR)" model. Together, the properties we identify for memory-sensitive neurons characterize direct electrophysiological mechanisms for the representation of contextual information in the human MTL.

Indexed as

Magnetic Resonance ImagingMemory, EpisodicAdolescentAdultBrain MappingEpilepsyFemaleHumansMaleMiddle AgedNeuronsTemporal LobeEpisodic memoryLocal field potentialMTLPhase offsetSingle unitTemporal clustering

Identifiers

PMID34742943
PMCPMC8802214
OpenAlexW3209134663

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.