Brain Time

Just read about neuroscientist David Eagleton's studies on the way the brain deals with time.
I loved how time can be called a sense, but not the sixth or seventh sense. He calls it metasensory because it rides on top of all the rest and has a slight lag while the brain puts it together.
When the engineers were trying to sync TV images and sound perfectly, they found that as long as the delay was less than a hundred milliseconds, no one noticed it.
With training, musicians track a sync that might be off as little as 2 milliseconds.
Sound is important. The brain processes sound before light. Another reason dancers shouldn't look at their feet.
And why time seems to speed up as we grow older? "The more detailed the memory, the longer the moment seems to last. The more familiar the world is, the less information your brain writes down." New Yorker 4/25