Evidence map›Paper›PMID 18258288›Full record

ArticlePharmacology, biochemistry, and behavior2008

Human olfactory detection of homologous n-alcohols measured via concentration-response functions.

J Enrique Cometto-Muñiz, Michael H Abraham

Abstract read
In one paragraph

Article in Pharmacology, biochemistry, and behavior, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

29 citing papers in PubMed.

  1. Odor Thresholds in Flavor Science: A Data-Driven Review From Mechanisms to Applications.Comprehensive reviews in food science and food safety · 2026
    Review
  2. Slow Release of Bioactive Alcohols From Butenolide Polymers and Coatings.Chemistry (Weinheim an der Bergstrasse, Germany) · 2026
    Article
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  15. Article
  16. Article
  17. The genetics of fruit flavour preferences.Nature reviews. Genetics · 2018
    Review
  18. Poor human olfaction is a 19th-century myth.Science (New York, N.Y.) · 2017
    Review
  19. Article
  20. 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.

J Enrique Cometto-MuñizChemosensory Perception Laboratory, Department of Surgery (Otolaryngology), University of California San Diego, La Jolla, CA 92093-0957, USA. ecometto@ucsd.edu
Michael H Abraham

Funding

CHEMICAL SENSORY IRRITATION: CONTRAST WITH OLFACTIONR01DC002741 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI COMETTO-MUNIZ, J. ENRIQUE · 2000 to 2010
$1.7M
NIDCD NIH HHS R01 DC 002741NIDCD NIH HHS R01 DC002741
6 · The paper itself

Abstract

We explored in humans concentration-detection functions for the odor of the homologous n-alcohols ethanol, 1-butanol, 1-hexanol, and 1-octanol. These functions serve to establish structure-activity relationships, and reflect the pharmacology of the olfactory sense at the behavioral level. We tested groups of 14 to 17 subjects (half of them females), averaging 31 to 35 years old. An 8-station vapor delivery device (VDD8) presented the stimulus under a three-alternative forced-choice procedure against carbon-filtered air. The VDD8 was built to meet the demands of typical human sniffs in a short-term (<5 s) olfactory detection task, and to accurately control odorant generation, delivery, and stability. Actual stimulus concentration was quantified by gas chromatography before and during testing. The functions obtained were log normally distributed and were accurately modeled by a sigmoid (logistic) function, both at the group and at the individual level. Sensitivity to ethanol was the lowest and to 1-octanol the highest. Functions became steeper with increasing carbon chain length. For all alcohols the concentration detected halfway between chance and perfect detection (threshold) was at the ppb (or nM) level. Females were slightly more sensitive than males. Intersubject variability across participants was between one and two orders of magnitude. The present odor thresholds were lower than many reported in the past but their relative pattern across alcohols paralleled that in our earlier data and in compilation studies. A previously described quantitative structure-activity relationship for odor potency holds promise to model thresholds that, like those obtained here, best reflect the intrinsic sensitivity of human olfaction.

Indexed as

AlcoholsOdorantsSensory ThresholdsAdolescentAdultDose-Response Relationship, DrugFemaleHumansMaleMiddle AgedPsychometricsQuantitative Structure-Activity RelationshipSex CharacteristicsVolatilizationAlcohols

Identifiers

PMID18258288
PMCPMC2323909

What OpenQuestion holds

Textmetadata
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.