biology psychology quiz 12

For a typical, healthy person, about how long does an average sleep cycle last?

90 minutes

An electroencephalograph displays ____.

a net average of all the neurons' potentials

What does cataplexy involve?

an attack of muscle weakness while awake

What is the BEST indicator that someone has a diagnosis of insomnia disorder?

consistently feeling sleepy during the day

An individual whose EEG recording shows sleep spindles and K-complexes _____.

has entered stage 2 of sleep

During sleep, what happens in the brain?

increased firing by GABA neurons

The research found that during REM sleep, activity ____.

increased in both the pons and limbic system

Orexin, produced by neurons in the hypothalamus, appears to be necessary for ____.

staying awake

Dreaming is most likely to occur during REM sleep but can occur during other stages as well.

true

An individual whose EEG is predominantly alpha waves is most likely _____.

very relaxed but sill awake