Sleep Cycles Flashcards
1
Q
REM
A
An active, awake-like EEG
Muscle atonia
2
Q
NREM
A
3 stages (N1, N2, N3)
3
Q
N1
A
Lightest sleep stage
Low-amplitude, high-frequency EEG activity
4
Q
N2
A
Similar to Stage 1, although eye movements stop.
Brain waves become slower with occasional bursts of rapid waves (called sleep spindles or K complexes)
5
Q
N3
A
Deep or slow-wave sleep
Low-frequency, high-amplitude delta waves.
6
Q
Normal sleep duration in infants
A
16-18 hours per day
7
Q
Normal sleep duration in 1- to 3-year-old children
A
10-16 hours
8
Q
When do naps begin to decrease?
A
Naps begin to decrease from two naps to one starting around 15–18 months of age.
9
Q
Normal sleep duration in adolescents?
A
At least 9 hours
