this is your brain on YouTube
File this under totally awesomely frickin' creepy. Researches at Gallant Lab at UC Berkley have found a way to recreate the images burned into a person's brain after viewing video clips based only on the person's brain activity.
Say what? Yeah, I don't know how the heck they did it but this video shows the clips that were shown on the right and what was recreated from brain activity on the left. And holy crap is it frighteningly accurate.
No wonder the image of things like, oh, walking in on your parents getting it on as a child, stay burned in your mind forever. Um yeah.