I did read it and he did not say it was additional, nor that it wasnt electricity, electromagnetism, or space. You seemed to suggest that it is "woo" that fields exit the brain, but this isnt so. Pretty much everything that makes up the brain has existed prior to the arisal of the brain and will continue to exist after the brain decomposes.Read what you quoted.
The poster I was responding to, had postulated an additional source of [something] (no detail provided). Perhaps he was talking about the space field too. What is a space field, by the way?
As for space: http://en.wikipedia.org/wiki/Space