Evidence map›Paper›PMID 23315042›Full record

ArticleChemical senses2013

Weaker ligands can dominate an odor blend due to syntopic interactions.

Daniel Münch, Benjamin Schmeichel, Ana F Silbering, C Giovanni Galizia

Abstract read
In one paragraph

Article in Chemical senses, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
–field-weighted citation impact
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

26 citing papers in PubMed.

  1. Article
  2. Locusts employ neuronal sensory prioritization to reconcile two conflicting olfactory signals while aggregating.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  3. Article
  4. Article
  5. Review
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  8. Review
  9. Article
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  11. Article
  12. Take time: odor coding capacity across sensory neurons increases over time in Drosophila.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2017
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Olfactory coding in the insect brain: data and conjectures.The European journal of neuroscience · 2014
    Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Daniel MünchNeurobiology, University of Konstanz, D-78457 Konstanz, Germany. daniel.muench@uni-konstanz.de
Benjamin Schmeichel
Ana F Silbering
C Giovanni Galizia

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Most odors in natural environments are mixtures of several compounds. Perceptually, these can blend into a new "perfume," or some components may dominate as elements of the mixture. In order to understand such mixture interactions, it is necessary to study the events at the olfactory periphery, down to the level of single-odorant receptor cells. Does a strong ligand present at a low concentration outweigh the effect of weak ligands present at high concentrations? We used the fruit fly receptor dOr22a and a banana-like odor mixture as a model system. We show that an intermediate ligand at an intermediate concentration alone elicits the neuron's blend response, despite the presence of both weaker ligands at higher concentration, and of better ligands at lower concentration in the mixture. Because all of these components, when given alone, elicited significant responses, this reveals specific mixture processing already at the periphery. By measuring complete dose-response curves we show that these mixture effects can be fully explained by a model of syntopic interaction at a single-receptor binding site. Our data have important implications for how odor mixtures are processed in general, and what preprocessing occurs before the information reaches the brain.

Indexed as

AnimalsDrosophila melanogasterDrosophila ProteinsFemaleOdorantsOlfactory Receptor NeuronsPerfumeReceptors, OdorantSmellDrosophila ProteinsOR22a protein, DrosophilaPerfumeReceptors, Odorant

Identifiers

PMID23315042
PMCPMC3629874

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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.