Here, a pacifier

(sensor)

"dexbaby Womb Sounds Bear Audio Pacifier, Brown"

 A three-week-old infant, if given a pacifier that turns on recordings of either its mother’s voice or a female stranger’s, will suck more vigorously when it hears its now-familiar mother.
(...) this is intuitive knowledge—__mediated by words or rational analysis."

 from past participle of intu r , to look at, contemplate : in-, on; see in-2 + tu r , to look at