Evidence map›Paper›PMID 34017129›Full record

ArticleNature neuroscience2021

A thalamo-amygdalar circuit underlying the extinction of remote fear memories.

Bianca A Silva, Simone Astori, Allison M Burns, Hendrik Heiser, Lukas van den Heuvel, Giulia Santoni, Maria Fernanda Martinez-Reza, Carmen Sandi, Johannes Gräff

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Nature neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 2 pooled it
7.3field-weighted citation impact, top 2% 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

56 citing papers in PubMed, 2 syntheses or guidelines pooled it, 84 citations in OpenAlex.

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  16. Science advances · 2025
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  20. Dopamine induces fear extinction by activating the reward-responding amygdala neurons.Proceedings of the National Academy of Sciences of the United States of America · 2025
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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

9 authors at 3 institutions in 4 countries.

Bianca A SilvaLaboratory of Neuroepigenetics, Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale Lausanne, Lausanne, Switzerland.ORCID http://orcid.org/0000-0003-3877-1356
Simone AstoriLaboratory of Behavioral Genetics, Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale Lausanne, Lausanne, Switzerland.
Allison M BurnsLaboratory of Neuroepigenetics, Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale Lausanne, Lausanne, Switzerland.ORCID http://orcid.org/0000-0001-7153-3160
Hendrik HeiserLaboratory of Neuroepigenetics, Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale Lausanne, Lausanne, Switzerland.ORCID http://orcid.org/0000-0003-1725-5571
Lukas van den HeuvelLaboratory of Neuroepigenetics, Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale Lausanne, Lausanne, Switzerland.ORCID http://orcid.org/0000-0001-9168-8450
Giulia SantoniLaboratory of Neuroepigenetics, Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale Lausanne, Lausanne, Switzerland.
Maria Fernanda Martinez-RezaLaboratory of Neuroepigenetics, Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale Lausanne, Lausanne, Switzerland.
Carmen SandiLaboratory of Behavioral Genetics, Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale Lausanne, Lausanne, Switzerland.ORCID http://orcid.org/0000-0001-7713-8321
Johannes GräffLaboratory of Neuroepigenetics, Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale Lausanne, Lausanne, Switzerland. johannes.graeff@epfl.ch.ORCID http://orcid.org/0000-0002-3219-3578
École Polytechnique Fédérale de Lausanne · CHHumanitas University · ITUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fear and trauma generate some of the longest-lived memories. Despite the corresponding need to understand how such memories can be attenuated, the underlying brain circuits remain unknown. Here, combining viral tracing, neuronal activity mapping, fiber photometry, chemogenetic and closed-loop optogenetic manipulations in mice, we show that the extinction of remote (30-day-old) fear memories depends on thalamic nucleus reuniens (NRe) inputs to the basolateral amygdala (BLA). We found that remote, but not recent (1-day-old), fear extinction activates NRe-to-BLA inputs, which become potentiated upon fear reduction. Furthermore, both monosynaptic NRe-to-BLA and total NRe activity increase shortly before freezing cessation, suggesting that the NRe registers and transmits safety signals to the BLA. Accordingly, pan-NRe and pathway-specific NRe-to-BLA inhibition impairs, whereas their activation facilitates, remote fear extinction. These findings identify the NRe as a crucial BLA regulator for extinction and provide the first functional description of the circuits underlying the attenuation of consolidated fear memories.

Indexed as

AmygdalaAnimalsExtinction, PsychologicalFearMemory, Long-TermMiceMice, Inbred C57BLNeural PathwaysThalamus

Identifiers

PMID34017129
OpenAlexW3162809124

What OpenQuestion holds

Textmetadata
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.