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