AS AN ATTEMPT TO DEFEND JEFF'S TECH, NOT NEWPORT
The thing that is really throwing this argument off are the words we are using. They are really mis-leading. OBVIOUSLY the body cannot send mental signals of it's own, and obviously it takes it's orders from he brain as to when it falls asleep.
But the "sleep check" signal exists. What is it exactly? I heard a really great theory from billybob once, it is a last-resort check when you are lazing around/lying in wait to tell if you wish to remain conscious or fall asleep. The premise of this dates back to our hunter/gatherer stages and further where humans would have to lie in wait for extended periods of time in order to get food. The simple explanation is those who fell asleep, didn't get food and died while those who developed mental functions to tell if they should remain awake or fall asleep, lived on. Natural selection.
Now let me tottaly tear apart the phrase "Your body sends a signal to the mind to see if it has fallen asleep, so it can fall asleep."
Lets start defining words in here. First, "sleep" in terms of the body is defined most readily by things such as slowed breathing, decreased hartrate, and just general shut down of bodily function.
"Sleep" in terms of the mind, is what we are checking for. This is totally mis-leading. What this urge is checking for is REM-atonia, in other words, the inability for the body to move.
As for what we define "the mind" and "the body" as, these are evidently different regions of your brain, which indeed ARE independant. They are connected only by a linking chain of neurons. How to they communicate? they send a electric pulse to one another.
So, re-writing this phrase, we get "Under conditions that resemble rest, one section of the brain (probably the medula) sends a signal to another section of the brain (probably in your frontal lobe somewhere) to check if the cause is REM atonia. If it is, your bodily functions will begin to slow allowing to to enter a more restful state."
This is why you should NEVER use fucking new-age shit terminology.
PS: Don't quote me on the brain areas. I have no real evidence for it. It might actually be the parietal lobe that sends a pulse to the medula, (or parietal lobe send pulse to medula, who then sends a pulse to somewhere else)
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