Have you heard of the cocktail party problem? It's not quite what you think. The cocktail party problem is the issue how you separate a single voice from a crowd of people. When you're at a party, there are people talking all around you, how do you pick out and focus and hear the one that you want? How does your brain solve the cocktail party problem? It turns out that it's more than just focus. I've over at Neurotic Physiology today, head over and check it out!