Relier Pairs sleep and dreamsVersion en ligne sleep and dreams par cate chodnicki 1 alpha wave 2 sleep functions 3 Insomnia 4 narcolepsy 5 freud's wish fulfillment 6 information processing theory 7 circadian rhythm 8 sleep cycle 9 beta wave 10 theta waves awake and alert awake and relaxed 90 minute repeating pattern of NREM and REM sleep protection, recovery, memory, and growth slow waves of light sleep difficulty falling asleep or staying asleep sudden attacks of overwhelming sleepiness helps sort through day's events and consolidate memories dreams express unacceptable feelings biological clock