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Insomnia

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

Narcolepsy

A sleep disorder that involves sudden attacks of overwhelming sleepiness, potentially leading to dangerous situations.

Sleep Apnea

A sleep disorder where a person stops breathing repeatedly during sleep, often without realization.

REM Sleep Behavior Disorder

A condition where individuals act out their dreams during REM sleep, potentially leading to injury.

Sleepwalking

A disorder where individuals perform complex actions while in a state of sleep, typically during N3 sleep stages.

Night Terrors

Disturbances during sleep that primarily affect children, characterized by sudden awakening in terror without memory of the event.

Manifest Content

According to Freud, the visible storyline or surface meaning of a dream.

Latent Content

According to Freud, the hidden, underlying meaning of a dream that reveals unconscious desires.

Wish Fulfillment Theory

Freud's theory that dreams serve to fulfill unmet desires and express unacceptable feelings.

Activation-Synthesis Theory

The theory that dreams result from the brain synthesizing random neural activity during sleep.

Information Processing Theory

The concept that dreaming helps to sort, consolidate memories, and process emotional information.

Cognitive Development Theory

A theory suggesting that dreams reflect our cognitive growth and simulate real-life experiences.

REM Sleep

A sleep stage characterized by rapid eye movement, vivid dreams, and increased brain activity.

Dream Enacting Behaviors

Actions taken by individuals during dreaming that may pose harm to themselves or others, associated with REM Sleep Disorder.

Sleep Deprivation

A condition resulting from insufficient sleep, impacting cognitive functions and emotional well-being.

Neurocognitive Theory

The theory that the activity of the brain during REM sleep is crucial for memory consolidation and emotional processing.