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Olfaction

Olfaction

The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...

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Related Experiment Video

Updated: Apr 16, 2026

Simple and Computer-assisted Olfactory Testing for Mice

Simple and Computer-assisted Olfactory Testing for Mice

Published on: June 15, 2015

A pilot study of the Self-Administered Computerized Olfactory Testing System.

Rong-San Jiang¹, Kai-Li Liang

¹Department of Otolaryngology, Taichung Veterans General Hospital, Taichung, Taiwan.

American Journal of Rhinology & Allergy

|March 19, 2015

Summary

This summary is machine-generated.

The Self-Administered Computerized Olfactory Testing System (SCOTS) demonstrates strong validity and test-retest reliability for assessing olfactory thresholds. This computer-controlled system is suitable for self-administered olfactory testing.

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Area of Science:

Otolaryngology
Neuroscience
Medical Technology

Background:

The Self-Administered Computerized Olfactory Testing System (SCOTS) was developed for computer-controlled olfactory threshold testing.
Evaluating the validity and reliability of SCOTS is crucial for its clinical application.

Purpose of the Study:

To assess the validity of the SCOTS against a standard odor detection threshold test.
To determine the test-retest reliability of the SCOTS for olfactory threshold measurement.

Main Methods:

180 subjects (60 normosmic, 60 hyposmic, 60 anosmic) underwent olfactory threshold testing using SCOTS and a standard test.
30 normosmic subjects were retested with SCOTS to evaluate reliability.
Data were analyzed for validity (correlation) and reliability (test-retest correlation).

Main Results:

Significant differences in olfactory thresholds were observed across normosmic, hyposmic, and anosmic groups (p < .001).
SCOTS showed a strong correlation with the standard odor detection threshold test (r = 0.809, p < .001).
SCOTS demonstrated good test-retest reliability (r = 0.671, p < .001).

Conclusions:

The SCOTS is a valid tool for measuring olfactory thresholds.
The system exhibits reliable performance for repeated self-administered olfactory testing.
SCOTS is appropriate for self-administered olfactory threshold assessment.