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 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.
MSU Digital Commons Citation
Koza, Brian J.; Cilmi, Anna; Dolese, Melissa; and Zellner, Debra, "Color Enhances Orthonasal Olfactory Intensity and Reduces Retronasal Olfactory Intensity" (2005). Department of Psychology Faculty Scholarship and Creative Works. 144.