Evidence map›Paper›PMID 33106508›Full record

ArticleNature communications2020

Differential reinforcement encoding along the hippocampal long axis helps resolve the explore-exploit dilemma.

Alexandre Y Dombrovski, Beatriz Luna, Michael N Hallquist

Abstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

12 citing papers in PubMed.

  1. Article
  2. Article
  3. Prefrontal Default Mode Network Interactions with Posterior Hippocampus during Exploration.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Memory consolidation from a reinforcement learning perspective.Frontiers in computational neuroscience · 2024
    Article
  10. Search for solutions, learning, simulation, and choice processes in suicidal behavior.Wiley interdisciplinary reviews. Cognitive science · 2022
    Review
  11. Review
  12. 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.

Alexandre Y DombrovskiDepartment of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 15213, USA.ORCID 0000-0002-2054-4772
Beatriz LunaDepartment of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 15213, USA.
Michael N HallquistDepartment of Psychology, Penn State University, University Park, PA, 16801, USA. michael.hallquist@gmail.com.ORCID 0000-0001-5894-8038

Funding

Refinement of Brain Mechanisms Underlying the Developmental Stabilization from Adolescent to Adult Neurocognitive ProcessingR01MH067924 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BEATRIZ LUNA · 2004 to 2026
$14.0M
PSYCHOBIOLOGY OF SUICIDAL BEHAVIOR IN BPDR01MH048463 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Alexandre Y. Dombrovski · 1992 to 2026
$13.9M
Reward Learning in Late-Life Suicidal BehaviorR01MH100095 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Alexandre Y. Dombrovski · 2014 to 2026
$6.8M
Neurocomputational studies of mood-related momentum dynamics linking reward learning, valuation and responsivityR01MH124092 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI DOMBROVSKI, ALEXANDRE Y., ELDAR, ERAN PLAYFAIR · 2020 to 2024
$5.3M
Neurocomputational mechanisms of impaired social decision-making in borderline personalityR01MH119399 · NIMH · UNIV OF NORTH CAROLINA CHAPEL HILL · PI HALLQUIST, MICHAEL NELSON · 2019 to 2024
$2.5M
Neurodevelopmental Origins of Emotion Dysregulation in Borderline PersonalityK01MH097091 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI HALLQUIST, MICHAEL NELSON · 2013 to 2016
$620k
NIMH NIH HHS K01 MH097091NIMH NIH HHS R01 MH048463NIMH NIH HHS R01 MH067924NIMH NIH HHS R01 MH100095NIMH NIH HHS R01 MH119399NIMH NIH HHS R01 MH124092
6 · The paper itself

Abstract

When making decisions, should one exploit known good options or explore potentially better alternatives? Exploration of spatially unstructured options depends on the neocortex, striatum, and amygdala. In natural environments, however, better options often cluster together, forming structured value distributions. The hippocampus binds reward information into allocentric cognitive maps to support navigation and foraging in such spaces. Here we report that human posterior hippocampus (PH) invigorates exploration while anterior hippocampus (AH) supports the transition to exploitation on a reinforcement learning task with a spatially structured reward function. These dynamics depend on differential reinforcement representations in the PH and AH. Whereas local reward prediction error signals are early and phasic in the PH tail, global value maximum signals are delayed and sustained in the AH body. AH compresses reinforcement information across episodes, updating the location and prominence of the value maximum and displaying goal cell-like ramping activity when navigating toward it.

Indexed as

Decision MakingAdolescentAdultChoice BehaviorFemaleHippocampusHumansLearningMaleReinforcement, PsychologyRewardYoung Adult

Identifiers

PMID33106508
PMCPMC7589536

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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.