Your brain is always at work, whether you are consciously listening or not, making note of the...

Even if you are sound asleep, your brain is always at work, listening to, making note of and interpreting sound. The listening brain performs like an orchestra of neurons that never stops encoding incoming sounds and even has what scientists call a "conductor". Learn more on NSF's "The Discovery ...This is an NSF Multimedia Gallery item.
Source: NSF Multimedia Gallery - Category: Science Source Type: video