Cognitive scientist Johnjoe McFadden’s research indicates that consciousness is a “field effect” resulting from “brain’s electromagnetic field interacting with its circuitry.”
Nerve cells firing simultaneously create powerful waves in the field, which in turn cause other neurons to spark. In this way, the electromagnetic field works as a sort of wireless processor, combining the most important information from the hard wiring of the brain into a wireless signal, which is then transmitted back to the brain as conscious thought.
Why don’t other electromagnetic waves effect our consciousness? Because “… our skull and protective membranes effectively block the radiation. According to his calculations, the fields from these outside sources are far weaker than the brain’s own natural electromagnetism.” I’m really into consciousness theories; anyone have any interesting ones?
Link (Wired article) Link (actual paper).