Olfactory perception of chemically diverse molecules

We present a dataset that captures the sensory perception of 480 different molecules at two different concentrations as experienced by 55 demographically diverse healthy human subjects. Subjects rated intensity, pleasantness, familiarity, and applied 20 odor descriptors. 40 stimuli (20 molecules at two concentrations) were presented to the subjects twice. Subjects were capable of matching intensity ratings to the concentration of the stimulus molecules: 98 % of the molecules that subjects perceived to be stronger than water (intensity rating of 14.44) were perceived to be more intense at the high concentration than at the low concentration (median intensity rating difference: 33.2). We discovered a strong influence of familiarity on the semantic description of odorants. In addition, the odor quality descriptors applied to the stimuli replicated how descriptors were applied by experts in…


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