Leah Has Just Fallen Asleep and Appears to Have Awakened

question 207

Multiple Choice

Leah has just fallen asleep and appears to have awakened with a start, reporting that she thinks she just saw a ghost hovering by the end of her bed. What is a likely explanation for her behaviour?

• A) She was experiencing K-complexes during stage 2 sleep, which is associated with visual disturbances.
• B) She was in REM sleep and was dreaming of ghosts like the ones she had seen in a movie earlier that night.
• C) She was in stage 1 sleep and experienced a myoclonic jerk and hypnagogic imagery.
• D) She was having a non-REM dream that was more like fleeting sleep images.

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Definitions:

Cell Membrane

A biological membrane that separates the interior of all cells from the outside environment, controlling the passage of substances in and out of the cell.

Myelin

A fatty substance that forms a sheath around the axons of many neurons, facilitating fast and efficient electrical conduction of nerve impulses.

Resting State

A condition or period in which something is not active or operating, often used in reference to the brain or body.

Axon

A long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.