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Yes, there is something like an "odor afterimage", at least in rodents. This is the paper: http://www.pnas.org/content/110/35/E3340.abstract But have in mind that this phenomenon is quite different from visual afterimages. First, it doesn't depend strictly on "adaptation", because adaptation is a property of the sensory organ, not of the brain. Second, ...


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The problem with odors is that no known odorant hits only one olfactory receptor. A saturating concentration of compound X for receptor A might be saturating another receptor B, but not receptor C. If you now decrease the concentration, receptor A is still saturated, receptor B is only partially activated and receptor C is not activated at all. Since smell ...



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