This is totally off topic, but, hey ...
Well, it does tie into the awareness thing that OP mentioned in
Message 16 (that this string stems from). So I'm going with it.
Most of the reflex reactions, like the doctor hitting your knee with that little rubber hatchet of his or accidentally touching a hot stove, are short circuited in the spinal column, if I recall. There is a threshold of signal that just passes up the cord to the brain, but over that threshold the spinal wiring will loop back part of the signal to some muscles to twitch away from the danger. The brain doesn't find out about it till after the fact.
So I've been reading, turns out I'm way out of my league... but that's never stopped me before.
Anyways, before reading, I was under the impression that the brain pretty much controls everything. I'd forgotten that the spinal cord is a pretty big part of the brain-system. I suppose you already know this stuff, but I've still got the tabs open and I think the lurkers can benefit. The old doctor-hitting-your-knee thing, that's the Patellar reflex, and you're right that it all happens in the spinal cord:
click to enlarge
What else that I found particularly interesting, was that the Patellar reflex occurs all the way down in the yellow section, around the L2 - L4 vertebrae. So yeah, its not even really all that close to the brain at all! No wonder the brain finds out later.
Muscle spasms and cramps are not brain directed and are mostly chemical screw-ups in the tissue or nerves from over use, under use or injury.
I can see how that could be more of a chemistry problem than a biological one, so that doesn't really tie into the awareness aspect.
So, yeah, I can see where you would say these things are "body" vs brain controlled.
Ringo said that your body IS you. I tend to think the other way. The "me" that I am is the conscious, sentient, part of the mind. And its begins to look like it has been distanced from the body.
The reason I found this interesting is because a few articles I read some months ago (wish I could find them) covered a number of studies with some strange implications. Some Neurologists and Psyrinks are starting to suggest that the conscious mind is just an input/output interface between the universe and the subconscious mind. The subconscious mind is where all the analysis and the decision-making take place and the conscious mind carries out those commands that require an outside interface. All the senses are wired into the brain and are shared by the subconscious and conscious, but the subconscious decides what to do about it all. They also speculated that the conscious mind’s realization of the actions may precede or lag behind the actual action as well as serving as memory of intent already decided by the subconscious.
That actually adds-up, to me. If we look at some of the "dumber" animals, they seem to be going about just fine despite not having much in the way of sentience and consciousness. The levels of those things that we
enjoy are plagued by, is a recent development in evolutionary history. It makes sense that they'd be an additional, or after-the-fact, kind of phenomenon.
Our senetience is an emergent property. The hard problem of consciousness kinda goes away a bit if you look at yourself from the other side. Rather than being the sentient portion of your mind, that happens to have this body that it is controlling, you're just another robot-like animal that has developed a level of sentience that, upon reflection, just seems to be distinct from the rest of the body. But really, the body is what you are, and the mind is something that develops within it. Without the "you-that-is-in-your-mind", you would still function as an ape bumbling around looking for food and mates. Its only after you self-reflect, that there seems to be some problem between the "you-that-is-in-your-mind" and the body that it only superficially seems to be in control of. But really, you are your body, and your mind is only an afterthought.
Edited by Catholic Scientist, : No reason given.