At 8/16/12 02:16 PM, 24901miles wrote:
Also, if you were in a stressful scenario (Apocalypse, some kind of life threatening situation, War, whatever), you could use all of your brain at one time, and it would start to process the way it was working to do things more efficiently, all while learning.
It's not just the "space" or percentage of the matter which composes the brain that's important. The brain has so many neurons, connections, and built in systems for sensory relay that it can work to improve processing speed on-the-fly.
Humans use almost their entire brain for most of the day. Much of it is not dedicated to conscious thought though, there's plenty of other things the brain has to manage.
It's a myth that we could improve our thought by somehow "unlocking" the unused portions of our brain. Only around 10% of the brain is neurons. Stressful situations can have an effect on how you think and behave but it's not your brain somehow working more efficiently.