NEURO - Sleep Physiology Flashcards
1
Q
Sleep physiology
A
regulated by the circadian rhythm, which is driven by suprachiasmatic nucleus (SCN)
of hypothalamus
“At night, BATS Drink Blood”
2
Q
Awake (eyes open)
A
Alert, active mental concentration
Beta (highest frequency, lowest amplitude)
3
Q
Awake (eyes closed)
A
Alpha
4
Q
Stage N1 (5%)
A
Light sleep
Theta
5
Q
Stage N2 (45%)
A
Deeper sleep; when bruxism occurs
Sleep spindles and K complexes
6
Q
Stage N3 (25%)
A
Deepest non-REM sleep (slow-wave sleep)
when sleepwalking, night terrors, and
bedwetting occur
Delta (lowest frequency, highest amplitude)
7
Q
REM sleep (25%)
A
Loss of motor tone, brain O2 use, and
variable pulse and blood pressure
when dreaming, nightmares, and penile/clitoral tumescence occur
may serve memory processing function
Beta
