A 72-year-old woman with insomnia participates in a sleep study. As part of the study protocol, she has EEG leads attached, then goes to sleep. At one point during the evening, 12-16 Hz sleep spindles and K-complexes are observed. Which stage of sleep is associated with this pattern?
AREM
BStage 1
CStage 2
DStage 3
Which anxiolytic acts through 5-HT1A receptor partial agonism without exhibiting significant anticonvulsant or muscle relaxant properties?
ADiazepam
BZolpidem
CPhenobarbitone
DBuspirone
A child presents with night blindness, delayed dark adaptation. Which investigation is to be done further to confirm the diagnosis?
AERG
BRetinoscopy
CDark adaptometry
DEOG
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