PSY 382 Exam 3 (QUESTIONS & ANSWERS)
RATED 100% CORRECT!!
Circadian Rhythm - AnswerA biological clock that operates on a 24-hour cycle
"Zeitgebers" - AnswerDaylight or other environmental cues that reset our circadian
rhythm
Light signals what in the brain - Answersignals the suprachiasmatic nucleus to
decrease its production of melatonin
REM Sleep - AnswerRapid eye movement sleep; a sleep stage during which vivid
dreams occur
NREM - AnswerNon rapid eye movement sleep
REM and NREM differ in: - Answerdifferent brain waves, changes in breathing and
muscle tension
When you are awake and alert, the brain generates _________ - Answerfast, low-
amplitude beta waves
As you begin to relax, and your eyes close, your brain generates __________ -
Answerslower alpha waves
Non-REM stage 1 sleep (NREM 1) - Answerbriefest and lightest stage of sleep, and
loud sounds and other stimuli can awaken you easily
Non-REM stage 2 sleep (NREM 2) - Answerabout 20 minutes, dstinguished by
periodic bursts of rapid brain waves called sleep spindles, which alternate with large K-
complex waves
breathing and heart rate even out and body temp drops
you can still be awaken without much difficult, but you are clearly asleep
About half of each nights sleep is spent in NREM 2
Non-REM stage 3 sleep (NREM 3) - Answerdeep, slow wave sleep
brain emits large (high amplitude) and very slow (low frequency) delta waves
, much harder to be awaken
most important stage is restoring energy levels, strengthening the immune system and
stimulating the release of growth hormone
REM sleep - AnswerOccurs about an hour after falling asleep, you shift from NREM 3
back to NREM 2, and then enter REM
Your eyes dart back and fourth, heart rate and breathing become more irregular, and
vivid dreams occur
faster beta brain waves
important in consolidating memory and other cognitive functions
brains motor cortex is active, but brainstem is blocked so muscles remain relaxed
The sleep cycle repeats itself every ______ - Answer90 minutes
As the night wears on _______ - AnswerNREM 3 sleep stages grow shorter, and
REM and NREM 2 get longer
By the time we awake we have spent _____ in REM sleep - Answer100 minutes
(25%)
Average american gets ____ hours of sleep - Answer6.8 (weekedays), 7.4
(weekends)
Social jet lag - Answerwhen our bodies internal biological clock is out of synch with
our social clock
Insufficent sleep is related to - AnswerSES, race, ethnicity, workplace, and
neightboorhood
Which race gets the least amount of sleep - Answerafrican-american (6.8)
Insomnia - Answera persistent problem in falling or staying asleep
Long sleepers (more than 7 hrs each night) are at risk for ____ - Answerobesity,
diabetes, high blood pressure, and cardiovascular disease
Sleep debt - Answeroccurs after a few nights of sleep loss and cannot be repaid by
one long sleep
RATED 100% CORRECT!!
Circadian Rhythm - AnswerA biological clock that operates on a 24-hour cycle
"Zeitgebers" - AnswerDaylight or other environmental cues that reset our circadian
rhythm
Light signals what in the brain - Answersignals the suprachiasmatic nucleus to
decrease its production of melatonin
REM Sleep - AnswerRapid eye movement sleep; a sleep stage during which vivid
dreams occur
NREM - AnswerNon rapid eye movement sleep
REM and NREM differ in: - Answerdifferent brain waves, changes in breathing and
muscle tension
When you are awake and alert, the brain generates _________ - Answerfast, low-
amplitude beta waves
As you begin to relax, and your eyes close, your brain generates __________ -
Answerslower alpha waves
Non-REM stage 1 sleep (NREM 1) - Answerbriefest and lightest stage of sleep, and
loud sounds and other stimuli can awaken you easily
Non-REM stage 2 sleep (NREM 2) - Answerabout 20 minutes, dstinguished by
periodic bursts of rapid brain waves called sleep spindles, which alternate with large K-
complex waves
breathing and heart rate even out and body temp drops
you can still be awaken without much difficult, but you are clearly asleep
About half of each nights sleep is spent in NREM 2
Non-REM stage 3 sleep (NREM 3) - Answerdeep, slow wave sleep
brain emits large (high amplitude) and very slow (low frequency) delta waves
, much harder to be awaken
most important stage is restoring energy levels, strengthening the immune system and
stimulating the release of growth hormone
REM sleep - AnswerOccurs about an hour after falling asleep, you shift from NREM 3
back to NREM 2, and then enter REM
Your eyes dart back and fourth, heart rate and breathing become more irregular, and
vivid dreams occur
faster beta brain waves
important in consolidating memory and other cognitive functions
brains motor cortex is active, but brainstem is blocked so muscles remain relaxed
The sleep cycle repeats itself every ______ - Answer90 minutes
As the night wears on _______ - AnswerNREM 3 sleep stages grow shorter, and
REM and NREM 2 get longer
By the time we awake we have spent _____ in REM sleep - Answer100 minutes
(25%)
Average american gets ____ hours of sleep - Answer6.8 (weekedays), 7.4
(weekends)
Social jet lag - Answerwhen our bodies internal biological clock is out of synch with
our social clock
Insufficent sleep is related to - AnswerSES, race, ethnicity, workplace, and
neightboorhood
Which race gets the least amount of sleep - Answerafrican-american (6.8)
Insomnia - Answera persistent problem in falling or staying asleep
Long sleepers (more than 7 hrs each night) are at risk for ____ - Answerobesity,
diabetes, high blood pressure, and cardiovascular disease
Sleep debt - Answeroccurs after a few nights of sleep loss and cannot be repaid by
one long sleep
