Term
|
Definition
| rhythm that completes a full cycle every 24 hours |
|
|
Term
|
Definition
| deep sleep, occuring during Stage III and especially during Stage IV in NREM sleep |
|
|
Term
|
Definition
| sleep disorders characterized by insomnia or excessive sleepiness |
|
|
Term
|
Definition
|
|
Term
|
Definition
| condition characterized by excessive sleeping, especially daytime sleeping |
|
|
Term
|
Definition
| difficulty in falling asleep |
|
|
Term
|
Definition
| a natural chemical produced at night that decreases wakefulness and promotes sleep |
|
|
Term
|
Definition
| condition characterized by an uncontrolled desire to sleep |
|
|
Term
|
Definition
| condition characterized by marked muscle contaction that results in jerking of one or both legs during sleep |
|
|
Term
|
Definition
| consists of four stages of sleep where there is very little eye movement |
|
|
Term
|
Definition
| patterns of waking behavior that appear during sleep (sleep walking, sleep talking) |
|
|
Term
|
Definition
| stage that constitutes 20-25% of a person's nightly sleep |
|
|
Term
|
Definition
| condition in which the body is in a decreased state of activity, with the consequent feeling of being refreshed |
|
|
Term
|
Definition
| a condition in which patients are unable to lie still and report experiencing unpleasant creeping or tingling sensations in the legs |
|
|
Term
|
Definition
| state of altered consciousness throughout which varying degrees of stimuli preclude wakefulness |
|
|
Term
|
Definition
| passage through the four stages of NREM, then reversal and finally, entering REM sleep and returning the NREM Stage II |
|
|
Term
|
Definition
| a decrease in the amount, consistency and quality of sleep; results from decreased REM or NREM sleep |
|
|
Term
|
Definition
|
|
