Sleepin' & Dreamin' Crossword

our body's natural rhythm synchronized with the 24 hr cycle of day and night.
awake but brain waves slow down
light sleep which lasts only minutes brain waves slow further and hallucinations are produced.
about 20 minutes long you are clearly asleep and there are bursts of brain activity (called sleep spindles).
transition period into stage 4 Delta waves are produced.
deepest stage of sleep and the hardest stage from which to awaken someone where Delta waves abound and the brain is still tuned to the outside.
after about 90 minutes from falling asleep you climb back up through the 4 stages and enter into this sleep.
this helps replace body and brain tissue and make neural connections and facilitates the release of growth hormones for development.
theory of the mental iceberg.
theory of activation-synthesis.
the deepest stage of sleep.
rapid eye movement.
another name for REM sleep.
sleep facilitates the release of growth of
sends out PGO waves as a person enters into the dream state.
Hobson's thoughts that dreams are the result of a specific process.