sleep Flashcards
developed in 1930. a non-invasive objective sleep recording instrument
electroencephalogram (eeg)
Records brainwaves and muscle movement
EEG
measures eye movements
electro-oculogram (EOG)
measures muscle tone
electromyogram (EMG)
box that EMG, EOG and EEG goes into which conducts signals via leads to computers
Headbox
sleep is catorgorised into what two contrasting subsstates?
Non-rapid eye movement (NREM) and rapid eye movement (rem)
what waves would you see in wake?
alpha waves
NREM sleep is divided How many stages
4
stage 3 and 4 of NREM sleep are known as
slow wave sleep (SWS)
sleep stage associated with sectetion of growth hormone
SWS
Characterized by prominent rapid eye movements, fast desychronised wave forms of low amplitude and loss of musle tone
REM
REM also referred to as
paradocical sleep
___associated with irregular temperature, heart rate and respiration, and intermittent muscle twitches.
REM
typically we experience ____ alternating nrem/rem cylcles of approx 90 minutes duration during a nocturnal sleep period.
four to five
we get the majority of our SWS during the first half of the night?
true
pattern of sleep stages across the night is referred to as ?
sleep architecture
remain active by day and rest at night?
diurnal
rhythms that roughly follow a 24 hr cycle
circadian rhythm
main signal that synchronizes internal body rythms
light/dark cycle
internal pacemaker in humans
suprachiasmatic nucleus (SCN) of the anterior hypothalamus
what production under dim light conditions is considered an effective marker of circadian phase?
melatonin
two factors that influence sleep /wake cycle
circadian and homeostatic drive
___ ____ refers to the sleep/ wale-depemdemt aspect of sleep regulation.
sleep homeostasi
homeostatic drive for sleep builds across the day and dissipates during sleep while the circadian drive for wakefulness
increases over the day and decreased during the night.
insomnia may be treated with behaviour therapy t or f?
T
_____ _____ refers to environmental or behavioral recommendations with the goal of promoting sleep or avoiding behaviour that disrupts sleep
sleep hygiene
