Consciousness Quiz Flashcards
our awareness of internal and external stimuli
consciousness
consciousness is a ___________ that ranges from full awareness to deep sleep
continuum
a state marked by relatively low levels of physical activity and reduced sensory awareness
sleep
a state marked by high levels of sensory awareness, thought and behavior
wakefulness
internal rhythms of biological activity
biological rhythms
alertness is associated with _________ body temperatures
higher
sleepiness is associated with _________ body temperatures
lower
a biological rhythm that takes place over a period of about 24 hours
circadian rhythm
the tendency of a biological system to maintain a balance or optimal level
homeostasis
the gland that is the main center for homeostasis
hypothalamus
part of the hypothalamus that contains the brain’s clock mechanism
suprachiasmatic nucleus (SCN)
hormone that helps regulate our sleep-wake cycles
melatonin
gland that releases melatonin
pineal gland
individual differences in circadian patterns of activity are known as a person’s…
chronotype
the brain’s control of switching between sleep and wakefulness, and coordinating the cycle with the outside world
sleep regulation
symptoms result from the mismatch between our internal circadian cycles and our environment
jet lag
consistent difficulty in falling or staying asleep for at least 3 nights a week over a month’s time
insomnia
a schedule that changes from early to late on a daily or weekly basis
rotating shift work
occurs when someone does not get sufficient sleep on a chronic basis
sleep debt
average amount of time adults need to sleep
7-9 hours
newborns can spend up to ____ hours a day sleeping
16
a sleep-deprived individual will fall asleep more quickly during opportunities for sleep
sleep rebound
hormones the pituitary gland secretes during sleep
FSH, LH, and growth hormone
there is arguments that sleep is important for __________ function and ___________ formation
cognitive; memory
highest frequency waves, happen when you’re awake
beta waves
transitional phase before actually falling asleep, heart rate and breathing slows
stage 1
lower frequency than beta waves, happen at the beginning of stage 1 sleep
alpha waves
waves with lower frequency and higher amplitude than alpha waves, happens towards end of stage one sleep
theta waves
burst of brain waves with a high frequency, important for learning and memory
sleep spindle
high amplitude that occurs due to an external stimuli
k complex
stage of sleep with deep relaxation, sleep spindles and k complexes
stage 2 sleep
waves with the lowest frequency and highest amplitude
delta
referred to as deep sleep or slow wave sleep
stage 3 sleep
sleep stage where the brain is very active but there is no movement of voluntary muscles
REM
sleep disorder where unwanted physical activity plays a role
parasomnia
