1 MCQs in Medicine for NEET PG
A 34-year-old male undergoes overnight polysomnography for evaluation of daytime hypersomnolence. During the study, the technologist identifies a distinctive waxing-and-waning sinusoidal burst at 13 Hz lasting 1.2 seconds, maximal over the central electrodes C3 and C4, superimposed on background theta activity. This is the structure marked **A** in the diagram. Which of the following best describes the primary physiological function of this graphoelement during sleep?
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