Sleeping and Dreaming Flashcards

2206858976	NREM (non-rapid eye movement) sleep	Sleep stages 1-4; they are accompanied by gradually slower and deeper breathing; a calm, regular heartbeat; reduced blood pressure; and slower brain waves. (Stages 3 and 4 are called slow-wave sleep.)	0
2206862756	REM (rapid eye movement) sleep	The stage of sleep during which muscle tone decreases dramatically but the EEG resemble that of someone who is awake; occurs in the second sleep stage.	1
2206864574	insomnia	a sleep disorder in which a person has trouble falling asleep or staying asleep at night	2
2206865515	narcolepsy	a daytime sleep disorder in which a person suddenly switches from an active waking state into REM sleep	3
2206866665	sleep apnea	a sleep disorder in which a person briefly but repeated stops breathing during the night	4
2206874339	sudden infant death syndrome (SIDS)	a disorder in which a sleeping baby stops breathing, does not awaken, and dies	5
2206877757	sleepwalking	a phenomenon that starts primarily in non-REM sleep, especially in stage 4, and involves walking while sleep; usually occurs during childhood	6
2206888422	nightmares	frightening dreams that take place during REM sleep	7
2206897632	sleep terror disorder (night terrors)	the occurrence of horrific dream images during stage 4 sleep, followed by rapid awakening and a state of intense fear; especially common in children; adults have milder versions	8
2206907304	REM behavior disorder	a sleep disorder in which the decreased muscle tone normally seen in REM sleep does not appear, this allowing dreams to be acted out; common in patients with Parkinson's disease and is often the first sign of a degenerative brain condition	9