Personality change may sound like an eerie, out-of-body experienceand as the quantum change stories show, it can be. But the science behind it is remarkably simple: You just have to remember to act how youd like to be, consistently. And this is true even of remarkable-seeming feats.
Daily sniffs can slow the speed of that drift, but they dont eliminate it. Nor, bizarrely, does learning: If the mice associated a smell with a mild electric shock, the neurons representing that scent would still completely change even though the mice continued to avoid it.
Pupils can also change size in response to other factors, such as increases in arousal. It was previously known that some people can change their pupil size at will, but by using indirect methods.
