extra Flashcards
long intervals of sleep wake
lower metabolic rates, longer intervals between meals, lower hour activity levels
= general slower of metabolism
familial advanced sleep phase syndrome
mutation in casine kinase gene that regulates PER2
extreme delayed sleep phase
PER3, CRY1, CLOCK
DSPS
longer-period circadian rhythm resting in delayed phase of sleep entrainment and increased sensitivity to light in the evening
beyond age 5
continuing decrease in total sleep duration and N3
increase in N2
increased total percentage of REM
4-12 months
12-16h
1-2 years
11-14h`
3-5 years
10-13h
6-12 years
9-12h
13-18 years
8-10h
decline in puberty of…
eeg delta power density during NREM sleep
when did delta power decline
12-14, 11 for girls correlates with differences in sexual maturation
delta decline proposed to be linked to
decline in cortical synaptic connectivity -> reduced local neural synchrony
chronotype preference phases
delayed preference at beginning of puberty, slower drift to ealier prefernce in adulthood
DSPS melatonin
increased sensitivity to light in evening, greater suppression of melatonin and larger phase shifts of melatonin rhythm
peri vs post menu
increased beta activity during NREM, increased in light sleep = more waking
menopause
elevated FSH
more hot flashes
more N1 sleep
less N2 sleep
more awakenings
increased N3
older men have a higher ratio of
NREm to REM sleep, suggesting homeostatic regulating of NRM delate activity
signal-noise ratio findings
age related decreased in SWS
sex related different related to skull thickness differences
older group sleep distribution
flat distribution of REM contrast to late-night increase for young adults
EEG of birdsS
similar to humans:
- low-amp EEG during waking
- high-amp EEG during NREM sleep
- low amp during REM
- REM usually 10s, no sleep spindles/k-complexes
sleep characteristcs
- sleep position
- immobile
- increased threshold for reactivity
- moderately intense stimuli lead to more/less rapid reversal of state
- deprivation of sleep = need more, homeostatically regulated
