Sleep and Disorders

A biological function and state of consciousness in which a person becomes relatively inactive and inattentive to stimuli.

• Sleep

• REM sleep

• NREM sleep

• hibernation

A deep sleep during which the brain becomes very active, rapid eye motion occurs, and dreaming begins.

• Sleep

• NREM Sleep

• REM Sleep

• Hiberation

The portion of the sleep cycle consisting of sleep stages 1-4 that is dominated by delta and theta brain waves.

• Sleep

• NREM Sleep

• REM Sleep

• Hibernation

An extended state of torpor in which body functions slow down tremendously for long periods of time.

• Sleep

• REM Sleep

• NREM Sleep

• Hibernation

Physical, mental, and behavioral changes that follow an approximate 24-hour cycle.

• REM Sleep

• NREM Sleep

• Circadian rhythms

• torpor

A state of rest in which a creature's heartbeat, body temperature, and awareness of the environment are drastically reduced, usually for hours at a time.

• REM Sleep

• NREM Sleep

• Circadian rhythms

• torpor

During stage 2 sleep, most of the brain waves will be measured as _______ waves.

• beta

• alpha

• theta

• delta

Hypnotic jerks are usually found in stage _____ of the sleep cycle

• 1

• 2

• 3

• 4

During this stage of sleep, you drift in and out of sleep and can be easily awakened.

• Stage 1

• Stage 2

• Stage 3

• Stage 4

During this stage of sleep, muscle activity and eye movements completely stop, and you become difficult to awaken.

• Stage 1

• Stage 2

• Stage 3

• Stage 4