Final Quiz Flashcards
If the SCN is separated from the rest of the brain by a series of knife cuts, and one looks at the activity of the cells in vitro, their rhythmicity…
persists.
In mammals, what is the effect of lesions of visual cortex on the rhythms of the SCN?
They are not altered.
A nocturnal animal is usually asleep during the…
night.
When a hamster or a person continues to display an activity cycle without any external cues about the time of day, the cycle is said to be…
free-running.
The process by which an animal slowly shifts its circadian rhythm to synchronize with the time of sunrise each day is called…
entrainment.
In the absence of light cues, hamsters with two copies of the tau mutation will show biological rhythms with periods of _______ hours.
about 20
The type of rhythmicity characterized by the regular, predictable onset of a particular behavior every six hours is called…
ultradian.
The type of rhythmicity characterized by the regular, predictable onset of a particular behavior once a day is called…
circadian.
The type of rhythmicity characterized by the regular, predictable onset of a particular behavior once a month is called…
infradian.
During REM, thermoregulation…
is impaired.
In humans, enhanced serum levels of growth hormone are evident during…
slow-wave sleep (SWS).
Slow, large-amplitude waves are seen in the EEG records of people who are in…
stage 3 sleep.
The usual duration of the typical human repeating sleep cycle is…
90-110 minutes.
Nightmares are associated with…
REM sleep.
Neck and body muscles are completely flaccid during…
REM sleep.
