Asked by Nguy?n Phúc on Jul 07, 2024
Verified
Investigators distinguish among stages 1, 2, 3, and 4 of sleep by observing
A) sleep position.
B) eye movements.
C) dream content.
D) brain waves.
Brain Waves
Electrical impulses in the brain that are visible on an electroencephalogram (EEG), indicative of different states of consciousness.
Sleep Stages
The different phases of sleep that a person goes through in a cycle, including REM (rapid eye movement) and various degrees of non-REM sleep.
Eye Movements
The voluntary or involuntary movement of the eyes, which can include blinking, and movements to follow visual objects or read.
- Appreciate the significance of brain waves in denoting various stages of sleep.
Verified Answer
PF
Pochon FranciscoJul 09, 2024
Final Answer :
D
Explanation :
Stages 1, 2, 3, and 4 of sleep are distinguished based on changes in brain wave patterns. Stage 1 is characterized by alpha waves, stage 2 by sleep spindles and K-complexes, stage 3 by delta waves, and stage 4 by predominantly delta waves. Eye movements and dream content are more closely associated with rapid eye movement (REM) sleep. Sleep position does not reliably distinguish between stages of sleep.
Learning Objectives
- Appreciate the significance of brain waves in denoting various stages of sleep.