How come you can hear/feel people when they enter your room, even if they're completely silent?

Question

You know when you're not looking, but you can kind of "hear" when someone has entered a room behind you? It's like an electrical kind of feeling... I can't explain it but I'm sure you know what I'm talking about.

Is there a scientific explanation behind this??

Answer 1

Mitachlorians!

Answer 2

That is a commonly held perception that has become an urban myth.  The scientific fact is that we don't really sense events that don't stimulate our normal senses.

Sorry.

Answer 3

because the ambient background noise is bouncing around the room depending on the shape it is. when somebody walks in, the room is a different shape, so it bounces around differently, and you notice that, without really noticing it.