Chapter 14 Flashcards
The 8-to-12 Hz EEG waves that are often associated with relaxed wakefulness are called
alpha waves
What is characterized by a low-amplitude, high-frequency sleep EEG signal that is similar to that observed during active wakefulness?
stage 1
Dreaming appears to occur mainly during
REM sleep
Which common belief about dreaming has been confirmed by research?
external stimuli such as people’s voices or a spray of water are sometimes incorporated into the dream content
According to Hobson’s activation-synthesis theory of dreaming, dream content reflects
random brain stem activity and the cortex’s attempt to make sense of the evoked experiences
The fact that most birds and mammals sleep even if it puts them at risk suggests
sleep serves an important physiological function
In studies of the effects of sleep deprivation in humans, the tasks that sleep-deprived volunteers are most likely to perform poorly are those that
involve high-level logical deduction
During microsleeps, people
become less responsive to external stimuli
The most influential circadian zeitgeber is the
light-dark cycle
There is good evidence that the internal circadian clock is located in the
suprachiasmatic nuelci
Studies of encephalitis lethargica suggested that the - promotes wakefulness
posterior hypothalamus
Electrical stimulation of the - awakens sleeping cats
reticular formation
Research suggests that exogenous melatonin has only a small sophorfic effect on humans, but may instead function as a
chronobiotic
Research suggests that exogenous melatonin has only a small sophorfic effect on humans, but may instead function as a
chronobiotic
A condition in which a person’s sleep is repeatedly disrupted by the inability to breathe is called
sleep apnea
