Evidence map›Paper›PMID 35487191›Full record

ArticleCell2022

Top-down control of hippocampal signal-to-noise by prefrontal long-range inhibition.

Ruchi Malik, Yi Li, Selin Schamiloglu, Vikaas S Sohal

Abstract read
In one paragraph

Article in Cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 1 pooled it
–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

76 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Heterogeneous Medial Prefrontal Cortex Ensembles Exhibit Reproducible Internal Temporal Dynamics during Choice Behavior.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
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  9. Review
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  11. Hippocampal astrocytic sequences emerge during learning and memory.bioRxiv : the preprint server for biology · 2026
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
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  18. Prefrontal contribution to passive coping behaviour in chronic stress and treatment by fast-acting antidepressant.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  19. Article
  20. Article

16 more citing papers are in PubMed but not listed here.

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

4 authors.

Ruchi MalikDepartment of Psychiatry and Behavioral Sciences, UCSF Weill Institute for Neurosciences, Kavli Institute for Fundamental Neuroscience, University of California San Francisco, San Francisco, CA, USA.
Yi LiDepartment of Psychiatry and Behavioral Sciences, UCSF Weill Institute for Neurosciences, Kavli Institute for Fundamental Neuroscience, University of California San Francisco, San Francisco, CA, USA.
Selin SchamilogluDepartment of Psychiatry and Behavioral Sciences, UCSF Weill Institute for Neurosciences, Kavli Institute for Fundamental Neuroscience, University of California San Francisco, San Francisco, CA, USA.
Vikaas S SohalDepartment of Psychiatry and Behavioral Sciences, UCSF Weill Institute for Neurosciences, Kavli Institute for Fundamental Neuroscience, University of California San Francisco, San Francisco, CA, USA. Electronic address: vikaas.sohal@ucsf.edu.

Funding

How is anxiety-related information relayed across hippocampal-prefrontal circuitsR01MH117961 · NIMH · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KHEIRBEK, MAZEN A, SOHAL, VIKAAS SINGH · 2019 to 2022
$2.3M
Restoring cognition by optogenetically rescuing gamma rhythms in PFC interneuronsR01MH106507 · NIMH · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI SOHAL, VIKAAS SINGH · 2015 to 2019
$2.0M
NIMH NIH HHS R01 MH106507NIMH NIH HHS R01 MH117961
6 · The paper itself

Abstract

Prefrontal cortex (PFC) is postulated to exert "top-down control" on information processing throughout the brain to promote specific behaviors. However, pathways mediating top-down control remain poorly understood. In particular, knowledge about direct prefrontal connections that might facilitate top-down control of hippocampal information processing remains sparse. Here we describe monosynaptic long-range GABAergic projections from PFC to hippocampus. These preferentially inhibit vasoactive intestinal polypeptide-expressing interneurons, which are known to disinhibit hippocampal microcircuits. Indeed, stimulating prefrontal-hippocampal GABAergic projections increases hippocampal feedforward inhibition and reduces hippocampal activity in vivo. The net effect of these actions is to specifically enhance the signal-to-noise ratio for hippocampal encoding of object locations and augment object-induced increases in spatial information. Correspondingly, activating or inhibiting these projections promotes or suppresses object exploration, respectively. Together, these results elucidate a top-down prefrontal pathway in which long-range GABAergic projections target disinhibitory microcircuits, thereby enhancing signals and network dynamics underlying exploratory behavior.

Indexed as

HippocampusPrefrontal CortexExploratory BehaviorInterneuronsVasoactive Intestinal PeptideVasoactive Intestinal Peptideexplorationgamma rhythmhippocampuslong-range inhibitionprefrontal cortextop-down control

Identifiers

PMID35487191
PMCPMC10027400

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.