Well them be some big words, action potential. You state this as if it is common fact, I doubt it is.

I am very familiar with this topic as I am majoring in psychology.
I would ask you to cite your source, so I can read it.

I know that 50%+ of your brain is called association areas which have no specific function. This fact was misinterpreted by the media and thus the myth of humans only using 50% was born. I’ve never heard of this 7-10%. I’ve had teachers explicitly say we use ~100%, as well it doesn’t make much sense. Why would evolution select an organism which creates a large organ and doesn’t use most of it. Hmm fishy

as well you should check your research regarding to white matter. Your brain is only made of grey matter (unmyelinated neurons). your spinal cord on the other hand is made of both white and grey.