Time Perception - Brain Overclocking

Have you ever felt time slowing down?
Usually, when facing high-stress situations, you later recall it as it happening in slow motion.
I can certainly realte to that after facing a car accident a couple years ago, when I recall watching thing fly off just like it was played in slow-motion.

Well, researchers are now conducting experiments that prove it's real: our time perception can indeed change and make time slow down (or speed up.)

Check this video excerpt from a documentary on BBC.