The nurse knows that polysomnograpy is:
a. the recording of brain waves and other variables.
b. the relay of motor impulse to the hypothalamus.
c. the patterns of biological functioning.
d. the recording of seizure activity in the brain.
ANS: A
Polysomnography is the recording of brain waves and other physiologic variables, such as muscle activity and eye movements, during sleep. The reticular activating system (RAS) receives sensory impulses from the spinal cord and relays motor impulses to the thalamus. The circadian rhythms influence patterns of biological and behavioral functions. An electroencephalogram is used to record seizure activity in the brain.
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