31. Electroencephalogram (EEG) Waves

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What diagnostic tool uses scalp electrodes to measure brain electrical activity?

Electroencephalogram

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What is the standard abbreviation for electroencephalogram?

EEG

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Under what physiological state are alpha waves typically seen on an EEG?

Awake and resting

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Under what state of mental activity are beta waves typically seen on an EEG?

Awake and concentrating on a task

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What states of relaxation produce theta waves on an EEG?

Deep relaxation and meditation

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What stages of sleep are characterized by theta waves on an EEG?

Light sleep and dreaming

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Under what stage of sleep are delta waves normally seen on an EEG?

Deep dreamless sleep