Psychiatry Question Bank – 9 Multiple Choice Questions on “Sleep Disorders”

1. Nightmares occur in:

A. REM sleep

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B. NREM-I sleep

C. NREM-II sleep

D. NREM-III sleep

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)

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


1.A 2.D 3.D 4.A 5.A 6.C 7.D 8.A 9.D


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