Match the following stages of sleep with their descriptions:
A) Stage 2
B) Stage 1
C) Stage 3
D) REM
E) Stage 4
1) The stage when vital signs (blood pressure, heart rate, and body temperature) reach their lowest normal levels.
2) Indicated by movement of the eyes under the lids; dreaming occurs.
3) Theta and delta waves begin to appear.
4) Very easy to awaken; EEG shows alpha waves; may even deny being asleep.
5) Typified by sleep spindles.
6) Begins about 90 minutes after the onset of sleep.
7) Necessary for emotional health; may be neural "debugging."
1) E Stage 4
2) D REM
3) C Stage 3
4) B Stage 1
5) A Stage 2
6) D REM
7) D REM
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Fill in the blank with correct words.
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