Sleep Disorders and Theories

These flashcards cover key vocabulary associated with sleep disorders, theories of sleep, and various aspects of sleep cycles as discussed in the lecture notes.

Insomnia

A sleep disorder characterized by an inability to initiate sleep or the inability to stay asleep.

Somnambulism

Sleepwalking that occurs during stages 3 and 4 of sleep.

Somniloquy

Sleep talking that occurs during stages 3 and 4 of sleep.

Sleep Apnea

A disorder in which an individual stops breathing during sleep.

Nightmares

Frightening dreams that occur during REM sleep and can be vividly recalled.

NREM Sleep

Non-Rapid Eye Movement sleep, includes stages 1, 2, 3, and 4.

REM Sleep

Rapid Eye Movement sleep, where dreaming occurs and brain activity resembles that of wakefulness.

Restorative Sleep Theory

The theory that suggests sleep allows for repair and revitalization of the body and brain.

Preservation and Protection Theory of Sleep

The theory that sleep serves to protect individuals from danger and minimize energy expenditure.

Sleep Cycle

The pattern of sleep stages that is repeated approximately every 90 minutes during a night of sleep.

Transient Sleep Problems

Temporary sleep issues often resulting from external stressors.

Sleep Paralysis

A condition characterized by the inability to move or speak while falling asleep or waking up.

Sleep Terror

A sleep disorder characterized by episodes of intense fear during sleep, often with a scream but a lack of memory of the event.

Nightmares vs. Night Terrors

Nightmares are bad dreams occurring during REM sleep, while night terrors occur during NREM sleep without memory of the event.