you hear something different than what is being said
... that when you can see a person speaking, sometimes you hear something different than what is being said because the brain cannot tell whether it is seeing or hearing speech?
... that when you can see a person speaking, sometimes <b id="mwDVI"><a href="./McGurk_effect" id="mwDVM" rel="mw:WikiLink" title="McGurk effect">you hear something different than what is being said</a></b> because the brain cannot tell whether it is seeing or hearing speech?