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Controlled Odor Mimic Permeation Systems for Olfactory Training and Field Testing
Published on: January 28, 2021
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Psychological Validation of a Standardized Odor Set for Olfactory Training
Naomi Gotow1, Takanobu Omata2, Satomi Kunieda3
1Human Informatics and Interaction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.
Summary
This study validated a standardized odor set for olfactory training by comparing average and individual odor perception models. Results show a strong correlation, supporting the average model
Area of Science:
- Olfactory Neuroscience
- Sensory Psychology
Background:
- Olfactory training is a common method for restoring olfactory function in patients with olfactory disorders.
- Standardized odor sets are frequently employed in olfactory training protocols.
Purpose of the Study:
- To psychologically validate the appropriateness of a standardized odor set for olfactory training.
- To develop and compare two models (average and individual) for evaluating odor perception based on psychological dimensions.
Main Methods:
- 173 healthy participants evaluated 32 everyday Japanese odors on intensity, familiarity, and pleasantness.
- Principal component analysis was used to derive a 'good smell index' (GSI) for each model.
- Two models were constructed: an average model (using mean values) and an individual model (using individual values).
Main Results:
- A significant and strong correlation was observed between the odor rankings generated by the average and individual models.
- The 'good smell index' (GSI) effectively captured odor perception based on familiarity and pleasantness.
Conclusions:
- The findings support the psychological appropriateness of using a standardized odor set, as the average model accurately reflects individual odor perception.
- The average model can aid in selecting new odors for standardized sets, with healthy participant data reinforcing clinical findings.
