Q:

The electroencephalogram normally shows voltage waves

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. The electroencephalogram normally shows voltage waves.


  1. Whose amplitude is related to intelligence.
  2. Of smaller amplitude during deep sleep than during alert wakefulness.
  3. Of lower frequency during deep sleep than during alert wakefulness.
  4. Of greater amplitude than those of the electrocardiogram.
  5. Which are bilaterally symmetrical.

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A. False EEG is no index of intelligence.

B. False High amplitude waves occur in deep sleep; the reverse is true of wakefulness.

C. True The high amplitude waves in sleep are of low frequency; the reverse is true of the low amplitude waves in wakefulness.

D. False EEG voltages are much smaller than ECG voltages.

E. True Asymmetry is a sign of disease.

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