Notes from NOVA: What are dreams?

This documentary examines the question whether dreams are meaningful or not, from a scientific point of view.

It turns out that sleep is a process that proceeds in stages from wakefulness to the deepest level of sleep, level 4. Sleep cycles among those stages:

* Dreams occur during all stages, but they differ in quality. REM dreams are the longest, and the most complex.

My feeling exactly

Thanks A.K.!

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