What term describes the bizarre experiences such as jerking or a feeling of falling during sleep onset?

• A. Hypnagogic sensations
• B. Insomnia
• C. Jet lag
• D. Narcolepsy

Answer: (A)

During the transition from wakefulness to sleep, you can have unusual sensory or motor events. These are hypnagogic sensations. They include things like brief, vivid experiences and the familiar jerks or a sensation of falling as you drift into sleep. They occur as you enter light sleep (stage N1) and are usually harmless.

The other terms don’t fit: insomnia is trouble sleeping in general, jet lag is circadian disruption from travel, and narcolepsy involves sudden daytime sleep attacks and excessive sleepiness. So the behavior described aligns best with hypnagogic sensations.