Knowra Dream Dream A sequence of experiences generated during sleep, often vivid and story-like. Dreams can include images, emotions, sensations, and apparent events that feel real while they occur.
Rapid eye movement sleep : A sleep stage marked by rapid eye movements, vivid dreaming, and temporary suppression of most skeletal muscle activity. Many vivid, story-like dreams occur during this stage, though dreaming also occurs elsewhere.
Sleep : A recurring, reversible state of reduced responsiveness and altered brain activity that supports health and cognition. Dreams are experiences generated within this changing state.
Sigmund Freud : An Austrian neurologist who founded psychoanalysis and developed influential theories of unconscious mental life. Freud made dreams central to psychoanalysis, treating them as transformed expressions of unconscious wishes.
Lucid dreaming : A dream state in which the dreamer recognizes that they are dreaming, sometimes with partial control over events. It offers a rare opportunity to study awareness and intentional behavior during sleep.
Continuity hypothesis : The proposal that dream content reflects concerns, experiences, and mental processes from waking life. It contrasts with accounts that treat dreaming as largely disconnected from everyday concerns.
Non-rapid eye movement sleep : The sleep stages that are not rapid eye movement sleep, ranging from light sleep to deep slow-wave sleep. Dreams also occur in these stages, often with less elaborate narratives than REM dreams.
Sleep cycle : A recurring progression through non-REM and REM sleep across a night. Dreaming changes with the stage and timing of each cycle.
The Interpretation of Dreams : Sigmund Freud’s 1899 book presenting a psychoanalytic theory of dreams and their interpretation. This work established Freud’s account of dream-work and the distinction between manifest and latent content.
Nightmare disorder : A sleep disorder involving repeated, distressing dreams that cause significant distress or impairment. Clinical assessment distinguishes disruptive nightmares from ordinary unpleasant dreams.
Threat simulation theory : The theory that dreams evolved partly to simulate threatening situations and rehearse responses. It gives dreams a specific adaptive function rather than viewing them as incidental by-products.
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