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