Normal Sleep Physiology — MCQs

Which of the following statements is MOST accurate regarding REM sleep?

The human body has rhythmic fluctuations in its function on a circadian cycle. Circadian rhythm is controlled by:

Berger waves (alpha waves) of EEG have a rhythm of how many Hz?

Which of the following is not true about sleep -

Which condition is associated with periodic discharges on EEG at 4-second intervals?

Which of the following neurotransmitters is primarily released from the sympathetic nervous system to increase heart rate in response to a DECREASE in blood pressure?

Caffeine impairs sleep by which of the following mechanisms?

A 7-year-old girl is reported by the parents as waking up in the night screaming, and she sits up in bed frightened. She does not respond to questions and after 2 or 3 minutes she goes back to sleep. She has no memory of these events the following morning. Which of the following is the most likely diagnosis?

Patient with obstructive sleep apnea-hypopnea syndrome is unlikely to have which of the following?

The sleep apnea syndrome is defined as -