Evidence map›Paper›PMID 34911768›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Prediction errors disrupt hippocampal representations and update episodic memories.

Alyssa H Sinclair, Grace M Manalili, Iva K Brunec, R Alison Adcock, Morgan D Barense

Erratum issuedAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 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 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing 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

45 citing papers in PubMed.

  1. Trial
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  6. Review
  7. Distinct Hippocampal Mechanisms Support Concept Formation and Updating.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Neural Representation of Episodic Time.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Review
  13. Article
  14. Article
  15. Spatial and semantic memory reorganize a hippocampal long-axis gradient.bioRxiv : the preprint server for biology · 2025
    Article
  16. Prediction Error-Related Memory Enhancement Depends on the Neural State Surrounding the Prediction Error Event.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  17. Prediction error and memory updating: Challenges ahead.Neuroscience and biobehavioral reviews · 2025
    Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Alyssa H SinclairDepartment of Psychology & Neuroscience, Duke University, Durham, NC 27710; allie.sinclair@duke.edu.ORCID 0000-0003-0447-3959
Grace M ManaliliDepartment of Psychology, University of Toronto, Toronto, ON M5S 3G3, Canada.ORCID 0000-0002-5337-495X
Iva K BrunecDepartment of Psychology, Temple University, Philadelphia, PA 19122.
R Alison AdcockDepartment of Psychology & Neuroscience, Duke University, Durham, NC 27710.
Morgan D BarenseDepartment of Psychology, University of Toronto, Toronto, ON M5S 3G3, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The brain supports adaptive behavior by generating predictions, learning from errors, and updating memories to incorporate new information. Prediction error, or surprise, triggers learning when reality contradicts expectations. Prior studies have shown that the hippocampus signals prediction errors, but the hypothesized link to memory updating has not been demonstrated. In a human functional MRI study, we elicited mnemonic prediction errors by interrupting familiar narrative videos immediately before the expected endings. We found that prediction errors reversed the relationship between univariate hippocampal activation and memory: greater hippocampal activation predicted memory preservation after expected endings, but memory updating after surprising endings. In contrast to previous studies, we show that univariate activation was insufficient for understanding hippocampal prediction error signals. We explain this surprising finding by tracking both the evolution of hippocampal activation patterns and the connectivity between the hippocampus and neuromodulatory regions. We found that hippocampal activation patterns stabilized as each narrative episode unfolded, suggesting sustained episodic representations. Prediction errors disrupted these sustained representations and the degree of disruption predicted memory updating. The relationship between hippocampal activation and subsequent memory depended on concurrent basal forebrain activation, supporting the idea that cholinergic modulation regulates attention and memory. We conclude that prediction errors create conditions that favor memory updating, prompting the hippocampus to abandon ongoing predictions and make memories malleable.

Indexed as

Memory, EpisodicAdolescentAdultFemaleHippocampusHumansMagnetic Resonance ImagingMaleMental RecallMiddle AgedNerve NetProsencephalonYoung Adultcognitive neurosciencehippocampusmemoryprediction errorreconsolidation

Identifiers

PMID34911768
PMCPMC8713973

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.