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