Raymond Chandler described it well, although he was talking about what a heavy drinker goes through while adjusting to sobriety (in one of his Philip Marlowe novels, The Long Goodbye). - " It's a different world. You have to get used to a paler set of colors, a quieter lot of sounds."
I.e., the world would be designed to be gentler to those with sensory overload, and would be less stimulating to those without...
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"I believe you find life such a problem because you think there are the good people and the bad people," said the man. "You're wrong, of course. There are, always and only, the bad people, but some of them are on opposite sides."
-- Terry Pratchett, Guards! Guards!