PSYC 1001 Chapter Notes -Electromyography, Human Brain, Oxycodone
9 Oct 2014
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Chapter 5 consciousness: consciousness the awareness of internal and external stimuli, mind wandering refers to people"s experience of task unrelated thoughts. Freud"s levels of awareness: conscious consists of whatever one is aware of at a particular point in time. Documenting/measuring sleep: electroencephalograph (eeg, electromyography (emg) records muscular activity and tension, electrooculograph (eog) records eye movements, heart rate, breathing. Stage 1: breathing & heart rate slow; muscle tension & body temperature decline, alpha waves turn to theta waves, hypnic jerks brief muscular contractions that occur as people fall asleep. Sleep spindles (brief bursts of high-frequency waves) appear against a background of mixed eeg activity. Slow wave sleep high-amplitude, low frequency delta waves become prominent in eeg recordings: more relaxed slower heart rate, then cycle reverses itself and the sleeper gradually moves back upward through the lighter stages. Stage 5 rem: rem rapid eye movements, deep sleep hard to wake.
