Evidence map›Paper›PMID 34913870›Full record

ArticleeLife2021

Parallel processing by distinct classes of principal neurons in the olfactory cortex.

Shivathmihai Nagappan, Kevin M Franks

Open access · goldAbstract read
In one paragraph

Article in eLife, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

16 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Projection-specific Routing of Odor Information in the Olfactory Cortex.bioRxiv : the preprint server for biology · 2025
    Article
  5. 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. Article
  8. 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
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
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.

Shivathmihai NagappanDepartment of Neurobiology, Duke University Medical School, Durham, United States.ORCID 0000-0001-5910-040X
Kevin M FranksDepartment of Neurobiology, Duke University Medical School, Durham, United States.ORCID 0000-0002-6386-9518
Duke University · US

Funding

The Structure of Olfactory Neural and Perceptual SpacesU19NS112953 · NINDS · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI FRANKS, KEVIN · 2019 to 2023
$18.4M
Odor Coding in Piriform CortexR01DC015525 · NIDCD · DUKE UNIVERSITY · PI Kevin Franks · 2016 to 2026
$4.1M
CRCNS: Odor processing by cortical neural circuits R01DC016782 · NIDCD · DUKE UNIVERSITY · PI FRANKS, KEVIN · 2017 to 2020
$716k
NIDCD NIH HHS R01 DC015525NIDCD NIH HHS R01 DC016782NINDS NIH HHS U19 NS112953
6 · The paper itself

Abstract

Understanding how distinct neuron types in a neural circuit process and propagate information is essential for understanding what the circuit does and how it does it. The olfactory (piriform, PCx) cortex contains two main types of principal neurons, semilunar (SL) and superficial pyramidal (PYR) cells. SLs and PYRs have distinct morphologies, local connectivity, biophysical properties, and downstream projection targets. Odor processing in PCx is thought to occur in two sequential stages. First, SLs receive and integrate olfactory bulb input and then PYRs receive, transform, and transmit SL input. To test this model, we recorded from populations of optogenetically identified SLs and PYRs in awake, head-fixed mice. Notably, silencing SLs did not alter PYR odor responses, and SLs and PYRs exhibited differences in odor tuning properties and response discriminability that were consistent with their distinct embeddings within a sensory-associative cortex. Our results therefore suggest that SLs and PYRs form parallel channels for differentially processing odor information in and through PCx.

Indexed as

AnimalsMaleMiceMice, TransgenicNeuronsOlfactory CortexOlfactory PathwaysPyramidal CellsReceptors, OdorantSmellReceptors, Odorantmouseneural codingneuroscienceNtng1olfactionparallel pathwayspiriform cortexsensory processing

Identifiers

PMID34913870
PMCPMC8676325
OpenAlexW4226242896

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.