The Stage of Sleep in Which Delta Waves Begin to Appear

question 138

Multiple Choice

The stage of sleep in which delta waves begin to appear is ________ sleep.

• A) Stage 1
• B) Stage 2
• C) Stage 3
• D) Stage 4

---

Definitions:

Anterograde Amnesia

A condition characterized by the inability to form new memories following the onset of the disorder, while memories from before the event remain intact.

Retroactive Interference

A memory problem that occurs when newly learned information interferes with the recall of previously learned information.

Retrograde Amnesia

A loss of memory-access to events that occurred, or information that was learned, before an injury or the onset of a disease.

Anterograde Amnesia

A condition characterized by an inability to form new memories following the onset of an amnesia-causing event, though long-term memories from before the event may remain intact.