I don't think anyone here is questioning that these things are a product of the brain. The brain is one heck of an amazing machine. It gives us our experiences and causes us to question them. It's the only type of brain in existence (at least in my perception of existence) that is capable of studying itself.
Aside from the fact that you make no mention whatsoever of phenomena which involve interactions between multiple, real, living humans (e.g. telepathy), let me ask you this...
What's your point?