Chapter 9 - Wakefulness and sleep Flashcards
1
Q
zeitgeber
A
stimulus that resets the circadian rhythm
2
Q
superchiasmatic nucleus (SCN)
A
area of the hypothalamus that generates circadian rhythms
3
Q
retinohypothalamic path
A
input directly from the retina to the SCN. it responds to light input, but no other visual stimuli
4
Q
melanopsin
A
photopigment in retinal ganglion cells that connect to the retinohypothalamic path
5
Q
melatonin
A
hormone that makes us sleepy
6
Q
polysomnograph
A
a combination of EEG and eye movement records
7
Q
slow wave sleep
A
stages 3 and 4 of sleep
8
Q
a cut through the midbrain will decrease arousal by damaging what?
A
the reticular formation
9
Q
cells releasing what are active during arousal and alertness?
A
histamine
10
Q
orexin
A
a neurotransmitter responsible for staying awake
