Yusef spends a night at a sleep clinic. The technicians at the clinic hook Yusef up to sensors to measure respiration, body temperature, muscle movements, and brain activity while he sleeps
What technique is the clinic using to study Yusef's sleep pattern?
A) positive sleep state analysis (PSSA)
B) somnambulism
C) polysomnography
D) biofeedback
Answer: C
Rationale: Polysomnography refers to a set of objective measurements used to examine sleep-wake rhythms. Polysomnograms usually include recordings of brain activity, eye and muscle movements, respiration, heart rate, and body temperature.
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