Lecture on Sleep and Consciousness

These flashcards cover key concepts related to sleep and consciousness as discussed in the lecture.

Circadian Rhythm

The 24-hour cycle of biological processes, including sleep and wakefulness, influenced by environmental cues such as light.

REM Sleep

Rapid Eye Movement sleep, a stage of sleep characterized by quick eye movements and vivid dreaming.

Delta Waves

Slow brain waves associated with deep sleep, primarily occurring in stages three and four of sleep.

Insomnia

A sleep disorder characterized by difficulty falling asleep or staying asleep.

Sleepwalking

A behavior disorder that originates during deep sleep and results in walking or performing other complex behaviors while asleep.

Sleep Apnea

A sleep disorder in which breathing repeatedly stops and starts during sleep, often leading to disrupted sleep.

Sleep Paralysis

A phenomenon in which a person, either during falling asleep or awakening, temporarily experiences an inability to move.

Lucid Dreaming

A state of consciousness where the dreamer is aware they are dreaming and can potentially control the dream.

Hypnagogic Images

Visual or sensory experiences that occur at the onset of sleep before entering true sleep.

Microsleeps

Short episodes of sleep that occur when a person is awake, often lasting only a few seconds.