Evidence map›Paper›PMID 26301325›Full record

ArticleNature neuroscience2015

Neuronal pattern separation in the olfactory bulb improves odor discrimination learning.

Olivier Gschwend, Nixon M Abraham, Samuel Lagier, Frédéric Begnaud, Ivan Rodriguez, Alan Carleton

Open access · greenAbstract read
In one paragraph

Article in Nature neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 111 papers.

0numbers the graph read from it
0cells of the map it votes in
111citing papers in PubMed
9.7field-weighted citation impact, top 1% 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

111 citing papers in PubMed, 200 citations in OpenAlex.

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  8. Behavioral Relevance of Early Neural Coding of Low-Level Odor Features in Humans.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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  18. Dense and Persistent Odor Representations in the Olfactory Bulb of Awake Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  19. Article
  20. Review

51 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

6 authors at 2 institutions in 1 country.

Olivier Gschwend *Department of Basic Neurosciences, School of Medicine, University of Geneva, 1 rue Michel-Servet, 1211 Geneva 4, Switzerland.
Nixon M Abraham *Department of Basic Neurosciences, School of Medicine, University of Geneva, 1 rue Michel-Servet, 1211 Geneva 4, Switzerland.
Samuel LagierDepartment of Basic Neurosciences, School of Medicine, University of Geneva, 1 rue Michel-Servet, 1211 Geneva 4, Switzerland.
Frédéric BegnaudFirmenich SA, Corporate R&D Division / Analytical Innovation, route des Jeunes 1, CH-1211 Geneva 8, Switzerland.
Ivan RodriguezGeneva Neuroscience Center, University of Geneva, Switzerland.
Alan CarletonDepartment of Basic Neurosciences, School of Medicine, University of Geneva, 1 rue Michel-Servet, 1211 Geneva 4, Switzerland.
University of Geneva · CHFirmenich (Switzerland) · CH

Funding

European Research Council 243344
6 · The paper itself

Abstract

Neuronal pattern separation is thought to enable the brain to disambiguate sensory stimuli with overlapping features, thereby extracting valuable information. In the olfactory system, it remains unknown whether pattern separation acts as a driving force for sensory discrimination and the learning thereof. We found that overlapping odor-evoked input patterns to the mouse olfactory bulb (OB) were dynamically reformatted in the network on the timescale of a single breath, giving rise to separated patterns of activity in an ensemble of output neurons, mitral/tufted (M/T) cells. Notably, the extent of pattern separation in M/T assemblies predicted behavioral discrimination performance during the learning phase. Furthermore, exciting or inhibiting GABAergic OB interneurons, using optogenetics or pharmacogenetics, altered pattern separation and thereby odor discrimination learning in a bidirectional way. In conclusion, we propose that the OB network can act as a pattern separator facilitating olfactory stimulus distinction, a process that is sculpted by synaptic inhibition.

Indexed as

AnimalsDiscrimination LearningImmunohistochemistryMaleMiceMice, Inbred C57BLMicroscopy, ConfocalOlfactory BulbOlfactory PathwaysOlfactory Perception

Identifiers

PMID26301325
PMCPMC4845880
OpenAlexW1630197489

What OpenQuestion holds

Textmetadata
LicenceTDM
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.