Dream

Dreaming is the subjective experience of remembered and imaginary images, sounds/voices, words, thoughts or sensations during sleep, usually involuntarily. The scientific discipline of dream research is oneirology. Dreaming has been associated with rapid eye movement (REM) sleep, a lighter form of sleep that occurs during the latter portion of the sleep cycle, characterized by rapid horizontal eye movements, stimulation of the pons, increased respiratory and heart rate, and temporary paralysis of the body. However, this association has been questioned since it may be that dream recall after REM sleep is common and because dreams are more easily recalled after waking from light REM sleep.

See also

• Hallucination
• Dream art
• Sleep
• Nocturnal emission (wet dream)