[PatrickHenry]

but you equate consciousness to electrical activity. If electrical activity is present, where is the consciousness, for a comatose person?

No, I don't "equate" them. I say only that there is evidence of electrical activity and this is associated with consciousness. That's all I said, and frankly, it's all I know. But this is sufficient to make consciousness different from "spirit" which provides us with no objective evidence of its existence.

[AndrewC]

But this is sufficient to make consciousness different from "spirit" which provides us with no objective evidence of its existence.

But how do you know that spirit and consciousness are different. As I posed the question before, where is the consciousness of a person under the knife?