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