Habituation is a neural mechanism where the response to a constant stimulus decreases over time.

“in addition to kind of getting used to stuff over time um it's also showing a different feature which is sort more particular contrast feature you're talking about so we over time we kind of habituate that's one sort of neural mechanism but another is the one that you mentioned which is about the contrast right and that's what you see kind of you see both of them say in the light perception right if I show you the same light over time you're going to habituate that's Hedon literally for folks listening uh it literally disappears yes if I set up the right experiment”