have you ever watched something that ...

maybe had lots of fast moving images and flashing lights and noises etc and after felt weird? like it did something to your brain for a second? i swear ive watched shows that had a quick flash of something else like a split second in the middle of the madness ( a scene in Z nation) i was with 4 people and 2 of us saw the quick blip but the others didnt. i wonder if some of us can pick up on subliminal messaging better than others or something...