9 Multiple Choice Questions (MCQs) with Answers on “Sleep Disorders” for Psychiatry Post Graduate Students:
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1. Nightmares occur in:
A. REM sleep
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B. NREM-I sleep
C. NREM-II sleep
D. NREM-III sleep
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Night terrors occur early in the night – (stage-4 NREM disorder).
Other stage-4 – NREM sleep disorders are:
Sleep walking (somnambulism)
Nocturnal enuresis (bed wetting)
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Bruxism (tooth grinding)
Sleep talking (somniloquy)
These are more common in first one-third of the night. Complete amnesia for the events does occur.
Narcolepsy-Excusive day time sleepiness with disturbed night-time sleep (decreased REM latency) prevalence is 4 per 10,000
The classical tetrad is: Sleep attacks (most common) Cataplexy
Hypnogogic hallucinations
Sleep paralysis (least common)
Dipsomania-Disturbance in quality, amount or timing of sleep.
1. Nocturnal myoclonus
2. Restless leg syndrome (Ekbom’s syndrome)
These often occur together.
2. The non-REM sleep is commonly associated with:
A. Frequent dreaming
B. Frequent penile erections
C. Increased blood pressure
D. Night terrors
3. Sleep depreciation results in:
A. Anxiety neurosis
B. Emotional disturbances
C. Psychotic behaviour
D. Mental alertness
4 to 5 days after sleep deprivation, psychological symptoms become prominent. There is inattention span, easy distractibility, drowsiness initiative to perform and micro sleeps beating but a few seconds.
4. In the following phase of sleep, maximum enhancement in pain threshold takes place:
A. REM sleep
B. Phase I
C. Phase III
D. Phase IV
5. Cataplexy is seen in:
A. Narcolepsy
B. Neuroleptic-malignant syndrome
C. Catatonic schizophrenia
D. Chronic depression
Tetrad of guinea seen in narcolepsy:
i. Sleep attacks
ii. Cataplexy
iii. Hypnogogic hallucinations
iv. Sleep paralysis
6. Hallucinations occurring during onset of sleep are called:
A. Jactatio capitis nocturna
B. Non-specific hallucinations
C. Hypnogogic hallucinations
D. Hypnopompic hallucinations
Hypnogogic and Hypnopompic hallucination can occur in normal people.
Hypnopompic hallucination occurs while awakening from sleep.
7. Associated with narcolepsy includes:
A. Obesity
B. Lymphocytosis
C. Sexual impotence
D. All of the above
8. EEG changes in paradoxical sleep predominantly:
A. Alpha waves
B. Beta Waves
C. Delta Waves
D. Mixed Frequency
Also remember – NREM
Stage-I – Theta waves
Stage -II – Sleep spindles K complexes
Stage-III and IV – Delta waves
9. Symptoms of narcolepsy include all of the following, except:
A. Cataplexy
B. Sleep attacks
C. Sleep paralysis
D. Sleepwalking
Answer
1.A 2.D 3.D 4.A 5.A 6.C 7.D 8.A 9.D