Evidence map›Paper›PMID 25615540›Full record

ArticleNeurobiology of learning and memory2015

Prefrontal NMDA receptors expressed in excitatory neurons control fear discrimination and fear extinction.

Philip A Vieira, Alex Corches, Jonathan W Lovelace, Kevin B Westbrook, Michael Mendoza, Edward Korzus

Open access · greenAbstract read
In one paragraph

Article in Neurobiology of learning and memory, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

24 citing papers in PubMed, 53 citations in OpenAlex.

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  10. Article
  11. Know safety, no fear.Neuroscience and biobehavioral reviews · 2020
    Review
  12. Review
  13. Elevated dopamine signaling from ventral tegmental area to prefrontal cortical parvalbumin neurons drives conditioned inhibition.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  14. Article
  15. Article
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  17. Review
  18. Article
  19. Review
  20. Genomic responses to selection for tame/aggressive behaviors in the silver fox (Proceedings of the National Academy of Sciences of the United States of America · 2018
    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

6 authors at 1 institution in 1 country.

Philip A VieiraDepartment of Psychology & Neuroscience Program, University of California Riverside, CA 92521, USA.
Alex CorchesBiomedical Sciences Program, University of California Riverside, CA 92521, USA.
Jonathan W LovelaceDepartment of Psychology & Neuroscience Program, University of California Riverside, CA 92521, USA.
Kevin B WestbrookDepartment of Psychology & Neuroscience Program, University of California Riverside, CA 92521, USA.
Michael MendozaMolecular Biology and Biochemistry Program, University of California Riverside, CA 92521, USA.
Edward KorzusDepartment of Psychology & Neuroscience Program, University of California Riverside, CA 92521, USA; Biomedical Sciences Program, University of California Riverside, CA 92521, USA; Molecular Biology and Biochemistry Program, University of California Riverside, CA 92521, USA. Electronic address: edkorzus@ucr.edu.
University of California, Riverside · US

Funding

Prefrontal circuits and function in memory accuracyR01MH106617 · NIMH · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI KORZUS, EDWARD · 2015 to 2017
$1.1M
Epigenetic Mechanisms in PsychosisR03MH086078 · NIMH · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI KORZUS, EDWARD · 2009 to 2010
$152k
NIMH NIH HHS MH086078NIMH NIH HHS R01 MH106617NIMH NIH HHS R03 MH086078
6 · The paper itself

Abstract

N-methyl-D-aspartate receptors (NMDARs) are critically involved in various learning mechanisms including modulation of fear memory, brain development and brain disorders. While NMDARs mediate opposite effects on medial prefrontal cortex (mPFC) interneurons and excitatory neurons, NMDAR antagonists trigger profound cortical activation. The objectives of the present study were to determine the involvement of NMDARs expressed specifically in excitatory neurons in mPFC-dependent adaptive behaviors, specifically fear discrimination and fear extinction. To achieve this, we tested mice with locally deleted Grin1 gene encoding the obligatory NR1 subunit of the NMDAR from prefrontal CamKIIα positive neurons for their ability to distinguish frequency modulated (FM) tones in fear discrimination test. We demonstrated that NMDAR-dependent signaling in the mPFC is critical for effective fear discrimination following initial generalization of conditioned fear. While mice with deficient NMDARs in prefrontal excitatory neurons maintain normal responses to a dangerous fear-conditioned stimulus, they exhibit abnormal generalization decrement. These studies provide evidence that NMDAR-dependent neural signaling in the mPFC is a component of a neural mechanism for disambiguating the meaning of fear signals and supports discriminative fear learning by retaining proper gating information, viz. both dangerous and harmless cues. We also found that selective deletion of NMDARs from excitatory neurons in the mPFC leads to a deficit in fear extinction of auditory conditioned stimuli. These studies suggest that prefrontal NMDARs expressed in excitatory neurons are involved in adaptive behavior.

Indexed as

Acoustic StimulationAnimalsAuditory PerceptionCalcium-Calmodulin-Dependent Protein Kinase Type 2Conditioning, PsychologicalDiscrimination, PsychologicalExtinction, PsychologicalFearFemaleGene Knockout TechniquesGeneralization, ResponseMaleMiceMice, Inbred C57BLNerve Tissue ProteinsNeuronsCalcium-Calmodulin-Dependent Protein Kinase Type 2Gprin1 protein, mouseNerve Tissue ProteinsReceptors, N-Methyl-D-AspartateFear discrimination learningFear extinctionMedial prefrontal cortexNMDAR

Identifiers

PMID25615540
PMCPMC7952093
OpenAlexW2028946352

What OpenQuestion holds

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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.