Psychology
Binaural Hearing
Quick fact
Humans can detect a sound reaching one ear just 10 millionths of a second earlier than the other—that’s about the time it takes for light to travel 3 kilometers.
Why this is interesting
Have you ever closed your eyes and still known exactly where a ticking clock or a friend’s voice is coming from? How does your brain turn two ear signals into a precise map of your surroundings?