Do you know what is Silva Method and who is José Silva?
The first time I came across Silva Method was around ten years ago. It is a powerful technique you can use for a lot of things: being more productive, relaxed, healing, manifesting what you have in mind and much more.
It based on the principle that you can achieve more and more in a deeper relaxation state, when you are in you Alpha level, a special brain frequency.
I am very aligned with José Silva, when I was studying Physics I came across similar questions, actually more concerning the electromagnetic field of the human body, but I when I went to the university library and checked a huge book about Neuroscience, I saw less than half of a page where it related brain activity with concepts in Physics.