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