I know there is an activity center in the center of the brain, which randomly fires impulses in all different directions of the brain. It is keeping the brain

I know there is an activity center in the center of the brain, which randomly fires impulses in all different directions of the brain. It is keeping the brain from shutting down itself. Brain neurons are connected the way that a thought needs to start from somewhere. No induction/initiation - no involuntary thought. The associative thinking seem also to start as a cause of that activity center, when two or more random independent thought chains are being randomly initiated and come together eventually, at the bottom of the chains, causing cross-thinking. This gives me a nice excuse why I'm restless and need to think all the time. I cannot close eyes in a dark room and have no thought. My brain is just working as usual -- I like it so.