What does REM sleep replenish?

Question

I recall reading somewhere that REM sleep replenishes either neurons or neurotransmitters (I can't remember.) Or I may be mistaken and just confusing REM with something else.

Answer 1

i found it interesting:

"Amnesia and cognitive abnormalities like "jumping" from one thought to another can be explained by "mode-switching," which Hobson describes as resulting from the turning off of aminergic neurons during REM sleep...Because aminergic neurons are turned off or slowed down during REM, supporters of metabolic theories argue that sleep might allow these neurons to replenish stock of neurotransmitters which they may use up during periods of attention.2 Yet because of the great activity of the brain during REM, and because the number of neurons inacti ve during NREM is relatively low (only a few percent), sleep as neural rest, the most intuitive of all apparent sleep functions, seems an inadequate notion"

Answer 2

I'm not sure if this is answering your answer specifically, but I'll give it a shot anyways. REM is level 4(the highest) of sleep. This is when you have dreams and things of that sort. It also is your deepest part of sleep. I believe REM occurs 3-4 times during an 8-hour period. Hope this helps.

Answer 3

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