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Unless you are counting wake there are only 4 stages of sleep. n1, n2, n3, and stage REM. Stage 4 is not counted anymore as it is rarely seen in adults. Stage 4 merges into stage 3 which will eventually merge with stage 2 as we age.
Motor skill function is also something we get from those first few cycles. The 5th and 6th cycles of the night are mainly REM sleep.
So which stages do what in terms of regulating metabolism, learning, memory, motor skills and mood?
Rock Hinkle said:Unless you are counting wake there are only 4 stages of sleep. n1, n2, n3, and stage REM. Stage 4 is not counted anymore as it is rarely seen in adults. Stage 4 merges into stage 3 which will eventually merge with stage 2 as we age.
Motor skill function is also something we get from those first few cycles. The 5th and 6th cycles of the night are mainly REM sleep.
Stage 2 has been found to be very important with motor skill function. Stage 2 and 3 are when a great deal of our hormones are released, and much of our healing and cell development occur. Growth hormone is released during stage 3 and at its peak is typically when we see stage 4 sleep. Without a certain level of growth hormone there is no stage 3 sleep. REM sleep controls mood,memory, and focus.
I do not want to give a wrong answer as to metabolism. I am just beginning to learn about this and nutrition as it pertains to sleep. I believe that metabolism may be affected by more than one stage. I do know that the constant arousals caused by apnea will cause a leptin imbalance. Leptin is the hormone that tells our brains that we have enough stored goods in our body to maintain our needs. When this hormone is out of balance we will crave food specifically carbs.
The short answer is that if your sleep cycles are shortened or interrupted consistantly your body will eventually breakdown mentally and physically. I will try to post some studies once I get back to my personal computer next week on these topics.
Mike said:So which stages do what in terms of regulating metabolism, learning, memory, motor skills and mood?
Rock Hinkle said:Unless you are counting wake there are only 4 stages of sleep. n1, n2, n3, and stage REM. Stage 4 is not counted anymore as it is rarely seen in adults. Stage 4 merges into stage 3 which will eventually merge with stage 2 as we age.
Motor skill function is also something we get from those first few cycles. The 5th and 6th cycles of the night are mainly REM sleep.
Cool. What does stage 1 do, if anything?
Rock Hinkle said:Stage 2 has been found to be very important with motor skill function. Stage 2 and 3 are when a great deal of our hormones are released, and much of our healing and cell development occur. Growth hormone is released during stage 3 and at its peak is typically when we see stage 4 sleep. Without a certain level of growth hormone there is no stage 3 sleep. REM sleep controls mood,memory, and focus.
I do not want to give a wrong answer as to metabolism. I am just beginning to learn about this and nutrition as it pertains to sleep. I believe that metabolism may be affected by more than one stage. I do know that the constant arousals caused by apnea will cause a leptin imbalance. Leptin is the hormone that tells our brains that we have enough stored goods in our body to maintain our needs. When this hormone is out of balance we will crave food specifically carbs.
The short answer is that if your sleep cycles are shortened or interrupted consistantly your body will eventually breakdown mentally and physically. I will try to post some studies once I get back to my personal computer next week on these topics.
Mike said:So which stages do what in terms of regulating metabolism, learning, memory, motor skills and mood?
Rock Hinkle said:Unless you are counting wake there are only 4 stages of sleep. n1, n2, n3, and stage REM. Stage 4 is not counted anymore as it is rarely seen in adults. Stage 4 merges into stage 3 which will eventually merge with stage 2 as we age.
Motor skill function is also something we get from those first few cycles. The 5th and 6th cycles of the night are mainly REM sleep.
A sleep doctor recently told me that as you get older you no longer have or need REM sleep. I had never heard that before. Any thoughts please?
Rock, It doesn't surprise me that you never heard that. This doctor did not impress me. I have a neuromuscular disorder that affects all of my muscles, including respiratory muscles. After a long conversation he said 'you don't have a sleep problem, you have a breathing problem.' Duh. I knew that. But I have this need to breathe when I sleep.
I was just trying to find out if anything he said made sense. I think I have found a better doc and I will be having yet another sleep study tomorrow night. I'm keeping my fingers and toes crossed.
I agree with everything you said, Mary.
But here is the complication: It is the control-responsibility factor: It is impossible to hold someone responsible for something he has no control crossed.
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