Evidence map›Paper›PMID 26051422›Full record

ArticleNeuron2015

Cortical Feedback Decorrelates Olfactory Bulb Output in Awake Mice.

Gonzalo H Otazu, Honggoo Chae, Martin B Davis, Dinu F Albeanu

Open access · bronzeAbstract readVideo-Audio Media
In one paragraph

Article in Neuron, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 123 papers.

0numbers the graph read from it
0cells of the map it votes in
123citing 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

123 citing papers in PubMed, 188 citations in OpenAlex.

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  13. Recalibrating Olfactory Neuroscience to the Range of Naturally Occurring Odor Concentrations.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Review
  14. Article
  15. Article
  16. Review
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  18. Anterior Olfactory Cortices Differentially Transform Bottom-Up Odor Signals to Produce Inverse Top-Down Outputs.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  19. Article
  20. Review

63 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 at 1 institution in 1 country.

Gonzalo H OtazuCold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.
Honggoo ChaeCold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.
Martin B DavisCold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.
Dinu F AlbeanuCold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA; Watson School of Biological Sciences, Cold Spring Harbor, NY 11724, USA. Electronic address: albeanu@cshl.edu.
Cold Spring Harbor Laboratory · US

Funding

Understanding the roles of cortico-bulbar feedback in odor identificationR01DC014487 · NIDCD · COLD SPRING HARBOR LABORATORY · PI ALBEANU, DINU FLORENTIN · 2016 to 2020
$2.0M
NIDCD NIH HHS R01 DC014487
6 · The paper itself

Abstract

The olfactory bulb receives rich glutamatergic projections from the piriform cortex. However, the dynamics and importance of these feedback signals remain unknown. Here, we use multiphoton calcium imaging to monitor cortical feedback in the olfactory bulb of awake mice and further probe its impact on the bulb output. Responses of feedback boutons were sparse, odor specific, and often outlasted stimuli by several seconds. Odor presentation either enhanced or suppressed the activity of boutons. However, any given bouton responded with stereotypic polarity across multiple odors, preferring either enhancement or suppression. Feedback representations were locally diverse and differed in dynamics across bulb layers. Inactivation of piriform cortex increased odor responsiveness and pairwise similarity of mitral cells but had little impact on tufted cells. We propose that cortical feedback differentially impacts these two output channels of the bulb by specifically decorrelating mitral cell responses to enable odor separation.

Indexed as

AcetalsAnimalsCalciumCerebral CortexExploratory BehaviorFeedback, SensoryGABA-A Receptor AgonistsLuminescent ProteinsMiceMice, TransgenicMuscimolOdorantsOlfactory BulbOlfactory PathwaysSynapsinsTime FactorsAcetalsCalciumGABA-A Receptor AgonistsLuminescent ProteinsMuscimolSynapsins

Identifiers

PMID26051422
PMCPMC7448302
OpenAlexW1948599852

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.