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Psychology Chapter 5

Psychology Chapter 5 - Chapter 5 Definition of...

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Chapter 5 Definition of Consciousness Consciousness is the awareness of internal and external stimuli. It involves the awareness of yourself and your thoughts. Electroencephalograph (EEG) The electroencephalograph is a device that monitors the electrical activity of the brain over time by mans of recording electrodes attached to the surface of the scalp. An EEG summarizes the rhythm of brain waves. Circadian Rhythms Circadian rhythms are the 24-hour biological cycles found in humans and many other species. They are very influential in the regulation of sleep. Stages of a Night’s Sleep Stage 1: A brief transitional stage of light sleep that usually lasts only a few (1-7) minutes. Stage 2: 30 minutes. Stage 3: Stage 4: delta sleep. Getting this helps us to feel rested, REM: 90 minutes total The EEG & Stages of Sleep Stage 1: theta waves prominent Stage 2: sleep spindles and mixed EEG activity Stage 3: progressively more delta waves Stage 4: progressively more delta waves REM sleep: low-voltage, high frequency waves Bodily Changes in Stages of Sleep
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