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