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