Color Enhances Orthonasal Olfactory Intensity and Reduces Retronasal Olfactory Intensity

The effect of color on orthonasal and retronasal odor intensities was investigated. When odorants were smelled orthonasally (i.e., through the nostrils), color enhanced odor intensity ratings, consistent with previous reports. However, when odorants were smelled retronasally (i.e., the odorous solut...

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Bibliographic Details
Published in:Chemical senses 2005-10, Vol.30 (8), p.643-649
Main Authors: Koza, Brian J., Cilmi, Anna, Dolese, Melissa, Zellner, Debra A.
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Color
Female
Fundamental and applied biological sciences. Psychology
Humans
Male
Middle Aged
multimodal interaction
Olfaction. Taste
orthonasal odor
Perception
Photic Stimulation - methods
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
retronasal odor
Smell - physiology
Stimulation, Chemical
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Summary:The effect of color on orthonasal and retronasal odor intensities was investigated. When odorants were smelled orthonasally (i.e., through the nostrils), color enhanced odor intensity ratings, consistent with previous reports. However, when odorants were smelled retronasally (i.e., the odorous solution was put in the mouth), color reduced odor intensity ratings. These different effects of color on odor intensity (i.e., enhancement orthonasally and suppression retronasally) appear to be the result of route of olfactory stimulation rather than of any procedural artifact. This supports previous reports that retronasal and orthonasal odors are perceived differently.
ISSN:0379-864X
1464-3553
DOI:10.1093/chemse/bji057