biopsych ch 8
During ______, cells in the pons send messages that inhibit the motor neurons that control the body's large muscles.
REM sleep
What does cataplexy involve?
an attack of muscle weakness while awake
The relationship between sleep stage and dreaming is that dreams ______.
are more frequent and more vivid in REM sleep
What is a typical characteristic of insomnia?
consistently getting less than 6 hours of sleep per night
If suprachiasmatic nucleus neurons are disconnected from the rest of the brain, they ______.
continue to produce activity that follows the circadian rhythm
Rob's body temperature fluctuates throughout the day and is usually the lowest ______.
in the middle of the night
Compared to the earlier part of the night, the later part of a night's sleep ______.
includes a larger percentage of REM sleep
During sleep, what happens in the brain?
increased firing by GABA neurons
The most potent zeitgeber for land animals (including humans) is ______.
light
EEG waves are larger when brain activity decreases because ______.
neurons are becoming more synchronized
The SCN is located just above the ______.
optic chiasm
The sequence of the bursts of neural activity during REM sleep is ______.
pons -> LGN -> occipital cortex
During which stage of sleep do we see sleep spindles and K-complexes?
stage two
Orexin, produced by neurons in the hypothalamus, appears to be necessary for ______.
staying awake
According to the activation-synthesis hypothesis, what do dreams reflect?
the brain's attempt to make sense of spontaneous neural activity