PSYC 150 Chapter Notes - Chapter 4: Non-Rapid Eye Movement Sleep, Rapid Eye Movement Sleep, Excessive Daytime Sleepiness
Document Summary
Consciousness: the continuous stream of thoughts, feelings, sensations, and perceptions of which we are aware from movement to movement. Altered states of consciousness: mental states other than ordinary waking consciousness, such as sleep, meditation, hypnosis, or a drug-induced state. Circadian rhythms: within each 24-hour period, the regular fluctuations from high to low points of a bodily function, such as sleep/wakefulness. Suprachiasmatic nucleus: a tiny structure in the brain"s hypothalamus that controls the timing of circadian rhythms; often referred to as the biological clock. Subjective night: the time during a 24-hour period when people"s body temperature is lowest and their biological clock tells them to go to sleep. Rem sleep: sleep characterized by rapid eye movement, paralysis of large muscles, fast and irregular heart rate and respiration rate, increased brainwave activity, and vivid dreams. Sleep cycle: a cycle of sleep lasting about 90 minutes and including one or more stages of nrem sleep followed by a period of rem sleep.
