C5 Flashcards
___ is a natural, periodically recurring state of rest
Sleep
Sleep is characterized by:
Lessened responsiveness
Reduced activity
Distinctive patterns of brain activity
___ are cycles that vary around 24 hours
Circadian (rhythms)
____ is an area of hypothalamus as an important neural structure that functions as a biological clock
Suprachiasmatic nucleus(SCN)
____ cycle is approx. annual opposed to circadian cycles
Circannual
___ is vital to our well-being preparing us for daily activity by anticipatory increases in heart rate, hormone levels and body temp
Suprachiasmatic nucleus(SCN)
___ is a graduate student who observed systematic changes in the eye movements of sleeping infants (discovered REM)
Eugene Aserinsky
Muscular movement is inhibited during ____ by activity of a network of cells located in the pons of the brain
REM sleep
nRem =
Sleepwalking and sleep terrors occur
____ is an abnormality where some people can thrash violently about, leap out of bed or attack their bed partners during REM sleep
REM Behavior disorder
____ roughly takes 45 mind to reach stage 4 sleep after first dozing off
Sleep cycle
Stage 4 takes about __
30-40 Mins
Then gradually returning to stage 3,2 and then 1
____ is a pathway of neurons that originates in the medulla and extends to the thalamus
Reticular activating system (RAS)
___ Is primarily responsible for our awakened state
Reticular activating state (RAS)
RAS primary neurotransmitter =
Norepinephrine/amphetamines (drugs that increase alertness and arousal)
