| MadSci Network: Medicine |
Stephanie, As you probably expect, there is no good answer for this. I am sure that a neurologist could trace out all the pathways of the nerve tracts that are required for initiating and completing a sneeze, but that would not answer the interesting question of why it has come to pass as being pleasurable for some people. We would have to assume that there is some benefit to our health to sneeze, otherwise we probably would have lost it during evolution. My dog sneezes, with or without pleasure. My wife finds no pleasure in sneezing and does so with only a little beep. I like a good hearty loud sneeze and experience a brief pleasurable sensation. The sensation of pleasure, from whatever means, reduced to its essentials probably is an electrochemical reaction in a specific collection of cells in a specific part of the brain.
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