I can consistently get 0.19 or so on this reaction time test, and 0.16 is the best I have gotten. It’s funny to think of that as “chemical processing time”. The photons hit the retina, where chemical reactions fire down the optic nerves to the visual center in the brain. From there signals go to the cortex to fire signals down the spine to my forearm, where a muscle twitches to click the mouse. It is entirely chemical… and it takes 0.19 seconds for it all to happen.
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