ArticleMolecular brain2021
Optogenetic inhibition of medial entorhinal cortex inputs to the hippocampus during a short period of time right after learning disrupts contextual fear memory formation.
Article in Molecular brain, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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.
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.
Who cites it
10 citing papers in PubMed, 14 citations in OpenAlex.
- Article
- Histamine shapes the neurocomputational dynamics of human learning.Nature communications · 2026Article
- Brief sleep disruption following hippocampus-dependent learning downscales interneuron synapses within lateral entorhinal cortex.bioRxiv : the preprint server for biology · 2025Article
- Maternal Metformin Administration During the Pre-Gestation Period Improves Transient Cerebral Ischemia Injury in Male Offspring Rats.Advanced pharmaceutical bulletin · 2024Article
- Projection neurons from medial entorhinal cortex to basolateral amygdala are critical for the retrieval of morphine withdrawal memory.iScience · 2024Article
- Circulating PACAP levels are associated with altered imaging measures of entorhinal cortex neurite density in posttraumatic stress disorder.European journal of psychotraumatology · 2024Article
- Effects of optogenetic silencing the anterior cingulate cortex in a delayed non-match to trajectory task.Oxford open neuroscience · 2024Article
- Spatial contextual recognition memory updating is modulated by dopamine release in the dorsal hippocampus from the locus coeruleus.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Neuronal Ensembles Organize Activity to Generate Contextual Memory.Frontiers in behavioral neuroscience · 2022Review
- Lateral entorhinal cortex neurons that project to nucleus accumbens mediate contextual associative memory.Learning & memory (Cold Spring Harbor, N.Y.)Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Formation of temporal association memory and context-specific fear memory is thought to require medial entorhinal cortex (MEC) inputs to the hippocampus during learning events. However, whether the MEC inputs are also involved in memory formation during a post-learning period has not been directly tested yet. To examine this possibility, we optogenetically inhibited axons and terminals originating from bilateral dorsal MEC excitatory neurons in the dorsal hippocampus for 5 min right after contextual fear conditioning (CFC). Mice expressing eNpHR3.0 exhibited significantly less freezing compared to control mice expressing EGFP alone during retrieval test in the conditioned context 1 day after learning. In contrast, the same optogenetic inhibition of MEC inputs performed 30 min before retrieval test did not affect freezing during retrieval test, excluding the possibility of non-specific deleterious effect of optical inhibition on retrieval process. These results support that contextual fear memory formation requires MEC inputs to the hippocampus during a post-learning period.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.