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22 Cards in this Set
- Front
- Back
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The awareness of internal and external stimuli. |
Consciousness |
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Conscious and unconscious processes are different... |
Levels of awareness |
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A device that monitors the electrical activity of the brain over time by means of recording electrodes attached to the surface of the scalp. |
Electroencephelograph (EEG) |
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Line tracings made up of apmlitude (height) and frequency (cycles per second, cps). |
Brain waves |
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Beta (13-24) cps, alpha (8-12) cps, theta (4-7) cps, and delta (under 4) cps are all types of...? |
Brain waves |
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Brain waves when you're alertly engaged in problem solving. |
Beta waves |
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Brain waves when you're relaxed and resting. |
Alpha waves |
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Brain waves in deep dreamless sleep. |
Delta waves |
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Brain waves in light sleep. |
Theta waves |
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Periodic fluctuation in physiological functioning. |
Biological rhythms |
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24-hour biological cycles used by many different species. |
Circadian rhythms |
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When exposed to light, some receptors in the retina send direct inputs to a small structure in the hypothalamus called the.... |
Suprachiasmatic nucleus (SCN) |
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The suprachiasmatic nucleus (SCN) sends signals to the _____________ which secretes the hormone _____________ to help adjust the biological clock. |
The pineal gland, melatonin |
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Records muscular activity and tension. |
Electromyograph (EMG) |
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Records eye movements. |
Electrooculograph (EOG) |
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Brief muscular contractions that occur as people fall asleep generally in stage 1. |
Hypnic jerks |
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Brief bursts of higher frequency brain waves in stage 2. |
Sleep spindles |
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Consists of sleep stages 3 and 4 during which high amplitude, low frequency delta waves become prominent in EEG recordings. |
Slow wave sleep (SWS) |
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The 5th stage of sleep which closely resembles stage one and when dreams take place the most and are most recallable. Sleeper has irregular breathing and pulse and is paralyzed. It is hard to wake the sleeper. The brain is dominated by beta waves. |
Rapid Eye Movement (REM) sleep |
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Consists of sleep stages 1-4 which are marked by an absence of rapid eye movement, relatively little dreaming and varied EEG activity. |
Non-REM (NREM) sleep |
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Consists of the incoming nerve fibers running throught the reticular formation that influence physiological arousal. |
Ascending reticular activating system (ARAS) |
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Refers to chronic problems in getting adequate sleep. |
Insomnia |
