Dream
Dream
Dream (/driːm/) is a succession of images, ideas, emotions, and sensations that usually occur involuntarily in the mind during certain stages of sleep. The content and purpose of dreams are not fully understood, although they have been a topic of scientific, philosophical and religious interest throughout recorded history.
Etymology
The word "dream" comes from the Old English drem, which means joy, music, and noise. It is related to the Old Norse draumr, the Old High German traum, and the Dutch droom, all of which mean dream.
Related Terms
- Sleep: A naturally recurring state of mind and body, characterized by altered consciousness, relatively inhibited sensory activity, reduced muscle activity and inhibition of nearly all voluntary muscles during rapid eye movement (REM) sleep, and reduced interactions with surroundings.
- REM Sleep: A unique phase of sleep in mammals and birds, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly.
- Lucid Dream: A type of dream where the dreamer becomes aware that they are dreaming. During a lucid dream, the dreamer may gain some amount of control over the dream characters, narrative, or environment.
- Nightmare: An unpleasant dream that can cause a strong emotional response from the mind, typically fear but also despair, anxiety or great sadness.
- Dream Interpretation: The process of assigning meaning to dreams. In many ancient societies, such as those of Egypt and Greece, dreaming was considered a supernatural communication or a means of divine intervention, whose message could be interpreted by people with these associated spiritual powers.
External links
- Medical encyclopedia article on Dream
- Wikipedia's article - Dream
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