Evidence map›Paper›PMID 21982367›Full record

ArticleNeuron2011

A major role for intracortical circuits in the strength and tuning of odor-evoked excitation in olfactory cortex.

Cindy Poo, Jeffry S Isaacson

Open access · bronzeAbstract read
In one paragraph

Article in Neuron, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed
5.2field-weighted citation impact, top 4% 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

79 citing papers in PubMed, 137 citations in OpenAlex.

  1. Article
  2. Article
  3. Projection-specific Routing of Odor Information in the Olfactory Cortex.bioRxiv : the preprint server for biology · 2025
    Article
  4. Representational drift and learning-induced stabilization in the piriform cortex.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  5. Anterior piriform cortex dysfunction underlies autism spectrum disorders-related olfactory deficits in Fmr1 conditional deletion mice.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  6. 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
  7. Lateral entorhinal cortex afferents reconfigure the activity in piriform cortex circuits.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Disinhibitory Circuitry Gates Associative Synaptic Plasticity in Olfactory Cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  17. Article
  18. Article
  19. Reciprocal relationships between sleep and smell.Frontiers in neural circuits · 2022
    Review
  20. Article

19 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Cindy PooCenter for Neural Circuits and Behavior, Department of Neuroscience, School of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
Jeffry S Isaacson
University of California, San Diego · US

Funding

Synaptic Processing in the Olfactory SystemR01DC004682 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ISAACSON, JEFFRY S · 2001 to 2020
$6.3M
Synaptic mechanisms underlying odor representations in olfactory cortex in vivoF31DC009366 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI POO, CINDY · 2007 to 2009
$89k
NIDCD NIH HHS 5F31DC009366NIDCD NIH HHS F31 DC009366NIDCD NIH HHS R01 DC004682NIDCD NIH HHS R01DC04682
6 · The paper itself

Abstract

In primary sensory cortices, there are two main sources of excitation: afferent sensory input relayed from the periphery and recurrent intracortical input. Untangling the functional roles of these two excitatory pathways is fundamental for understanding how cortical neurons process sensory stimuli. Odor representations in the primary olfactory (piriform) cortex depend on excitatory sensory afferents from the olfactory bulb. However, piriform cortex pyramidal cells also receive dense intracortical excitatory connections, and the relative contribution of these two pathways to odor responses is unclear. Using a combination of in vivo whole-cell voltage-clamp recording and selective synaptic silencing, we show that the recruitment of intracortical input, rather than olfactory bulb input, largely determines the strength of odor-evoked excitatory synaptic transmission in rat piriform cortical neurons. Furthermore, we find that intracortical synapses dominate odor-evoked excitatory transmission in broadly tuned neurons, whereas bulbar synapses dominate excitatory synaptic responses in more narrowly tuned neurons.

Indexed as

AnimalsBaclofenGABA-B Receptor AgonistsOdorantsOlfactory PathwaysOlfactory PerceptionPyramidal CellsRatsRats, Sprague-DawleySynaptic TransmissionBaclofenGABA-B Receptor Agonists

Identifiers

PMID21982367
PMCPMC3190137
OpenAlexW2029725340

What OpenQuestion holds

Textmetadata
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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.