Orianna experiences a vivid, detailed, and highly pictorial dream. She most likely experienced this dream during which stage of sleep?

A) stage 1 sleep
B) stage 2 sleep
C) slow-wave sleep
D) REM sleep

Slow-Wave Sleep

A term used for both stage 3 and stage 4 sleep; characterized by slow, rolling eye movements, low cortical arousal, and slowed heart rate and respiration.

Stage 1 Sleep

The initial phase of the sleep cycle, characterized by light sleep, easy wakefulness, and a decrease in bodily movement and heart rate.