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