Sleep Stages-
Awake- Brain waves- “Beta Wave”- 12 Hz (cps) and above
Relaxed/ awake- movement to “Alpha wave” 8-12 Hz
Stage 1 2-5% of total sleep time
Brain waves- Alpha to Theta
Hypnagogic state
Hallucinations-
Stage 2- 40-55% of total sleep time
theta waves- 4-8 Hz
Sleep spindles
K-Complexes
Stage 3- SWS
Transition stage
Movement from Theta- to DELTA- 2-4Hz
Stage 4- 30-40% of sleep time
SWS
Delta waves make up 50% of the sleep record
This stage shortens with each additional cycle-
“Fun Fact” can be seen in awake children under age of 13
SWS is where we find sleep walking, sleep talking, night
Terrors, and bed wetting
NREM- name given to the above stages- none as non rapid eye movement
-these cycles usually repeat themselves 5 time during the night in 90
minute cycles-
REM 20 to 25% of sleep time
Rapid eye movement- brain waves approach alpha wave status
This stage lengthens we each additional cycle-
Dreams
REM rebound
False awakenings- alen abductions- ghostly encounters
Sleep Paralysis
“Fun Fact” cows we laying down during REM time- so if they
Fall asleep standing they will fall over when they go to REM
“Fun Fact” we can see REM action in the human fetus
Awake- Brain waves- “Beta Wave”- 12 Hz (cps) and above
Relaxed/ awake- movement to “Alpha wave” 8-12 Hz
Stage 1 2-5% of total sleep time
Brain waves- Alpha to Theta
Hypnagogic state
Hallucinations-
Stage 2- 40-55% of total sleep time
theta waves- 4-8 Hz
Sleep spindles
K-Complexes
Stage 3- SWS
Transition stage
Movement from Theta- to DELTA- 2-4Hz
Stage 4- 30-40% of sleep time
SWS
Delta waves make up 50% of the sleep record
This stage shortens with each additional cycle-
“Fun Fact” can be seen in awake children under age of 13
SWS is where we find sleep walking, sleep talking, night
Terrors, and bed wetting
NREM- name given to the above stages- none as non rapid eye movement
-these cycles usually repeat themselves 5 time during the night in 90
minute cycles-
REM 20 to 25% of sleep time
Rapid eye movement- brain waves approach alpha wave status
This stage lengthens we each additional cycle-
Dreams
REM rebound
False awakenings- alen abductions- ghostly encounters
Sleep Paralysis
“Fun Fact” cows we laying down during REM time- so if they
Fall asleep standing they will fall over when they go to REM
“Fun Fact” we can see REM action in the human fetus