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