Number of discriminable odors

Value 10000 odors
Organism Human Homo sapiens
Reference Meister M., On the dimensionality of odor space. Elife. 2015 Jul 7 4 :e07865. doi: 10.7554/eLife.07865. P.1 bottom paragraphPubMed ID26151672
Primary Source Gilbert A. 2008. What the nose knows: the science of scent in everyday life. Crown publishing.
Comments P.1 bottom paragraph: "But what is the perceptual space for odors? The exact analog of the early color mixing experiments has not been done, but from a quantitative analysis of perceptual similarities it has been argued that the space of odors is dominated by just one or two dimensions (Secundo et al., 2014), much fewer than the 400 dimensions at the level of sensory receptors [BNID 112608]. Similarly the number of discriminable odors is thought to be only 10,000, although this estimate is largely anecdotal (primary source). Clearly there is a paradox that remains to be resolved pitting the perceptual space of human smell against the receptor space."
Entered by Uri M
ID 112609