PSYC 101 Lecture Notes - Lecture 5: Mescaline, Clinical Trial, Psychological Dependence
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PSYC 101 Full Course Notes
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Sleep is an altered state of consciousness: departs significant from the normal subjective view of the world. A naturally recurring state of mind characterized by altered consciousness, inhibited sensory input, etc. (see slides/copy) Humans (adult) sleep on average around 7-8 hours. Sleep is a biological need: most animals sleep even when it is not adaptive. Circadian rhythm: naturally occurring 24-hour cycle of the body sleep is a part of this. Humans are adapted to sleep at nighttime circadian rhythms help prepare us for sleep at nigh, and wakefulness in the morning. Jet lag can occur when we mess with our circadian rhythm. Electroencephalography (eeg) used to measure electrical activity in the brain can help measure different states of alertness and attention. Stage 3/4: delta waves (deep sleep/slow wave sleep) Stage 5: rem (rapid eye movement) sleep (a stage of sleep characterized by rapid eye movements and high level of brain activity) Pulse increase, blood pressure increase, sexual arousal, muscles.
