Evidence map›Paper›PMID 30213885›Full record

ArticleScience (New York, N.Y.)2018

Recurrent cortical circuits implement concentration-invariant odor coding.

Kevin A Bolding, Kevin M Franks

Abstract read
In one paragraph

Article in Science (New York, N.Y.), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 119 papers.

0numbers the graph read from it
0cells of the map it votes in
119citing papers in PubMed
11.9field-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

119 citing papers in PubMed, 235 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Projection-specific Routing of Odor Information in the Olfactory Cortex.bioRxiv : the preprint server for biology · 2025
    Article
  18. Order code in the olfactory system.bioRxiv : the preprint server for biology · 2025
    Article
  19. Simultaneous detection and estimation in olfactory sensing.bioRxiv : the preprint server for biology · 2025
    Article
  20. Article

59 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

2 authors at 1 institution in 1 country.

Kevin A BoldingDepartment of Neurobiology, Duke University Medical School, Durham, NC, USA.ORCID 0000-0002-2271-5280
Kevin M FranksDepartment of Neurobiology, Duke University Medical School, Durham, NC, USA. franks@neuro.duke.edu.
Duke University · US

Funding

Odor Coding in Piriform CortexR01DC015525 · NIDCD · DUKE UNIVERSITY · PI Kevin Franks · 2016 to 2026
$4.1M
Synaptic Processes Mediating Cortical Odor CodingR00DC009839 · NIDCD · DUKE UNIVERSITY · PI FRANKS, KEVIN · 2012 to 2014
$728k
CRCNS: Odor processing by cortical neural circuits R01DC016782 · NIDCD · DUKE UNIVERSITY · PI FRANKS, KEVIN · 2017 to 2020
$716k
Synaptic Processes Mediating Cortical Odor CodingK99DC009839 · NIDCD · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI FRANKS, KEVIN · 2009 to 2010
$180k
NIDCD NIH HHS K99 DC009839NIDCD NIH HHS R00 DC009839NIDCD NIH HHS R01 DC015525NIDCD NIH HHS R01 DC016782
6 · The paper itself

Abstract

Animals rely on olfaction to find food, attract mates, and avoid predators. To support these behaviors, they must be able to identify odors across different odorant concentrations. The neural circuit operations that implement this concentration invariance remain unclear. We found that despite concentration-dependence in the olfactory bulb (OB), representations of odor identity were preserved downstream, in the piriform cortex (PCx). The OB cells responding earliest after inhalation drove robust responses in sparse subsets of PCx neurons. Recurrent collateral connections broadcast their activation across the PCx, recruiting global feedback inhibition that rapidly truncated and suppressed cortical activity for the remainder of the sniff, discounting the impact of slower, concentration-dependent OB inputs. Eliminating recurrent collateral output amplified PCx odor responses rendered the cortex steeply concentration-dependent and abolished concentration-invariant identity decoding.

Indexed as

Olfactory PerceptionAnimalsFeedback, PhysiologicalMiceOdorantsOlfactory BulbOlfactory PathwaysPiriform CortexSmell

Identifiers

PMID30213885
PMCPMC6492549
OpenAlexW2952807825

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.