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An oneirogen, from the Greek ὄνειρος óneiros meaning "dream" and gen "to create", is a substance or other stimulus which produces or enhances dreamlike states of consciousness. [1] This is characterized by an immersive dream state similar to REM sleep, which can range from realistic to alien or abstract.
A lucid dream is one in which the dreamer is aware that they are dreaming. They are able to exert some or a complete control over the dream's characters, narrative and/or environment. Early references to the phenomenon are found in ancient Greek texts.
In the psychology subfield of oneirology, a lucid dream is a type of dream wherein the dreamer realizes that they are dreaming during their dream. The capacity to have lucid dreams is a trainable cognitive skill . [ 1 ]
Lucid dreaming is the conscious perception of one's state while dreaming. In this state the dreamer may often have some degree of control over their own actions within the dream or even the characters and the environment of the dream.
Oneiromancy (from Greek όνειροϛ 'dream' and μαντεία (manteia) 'prophecy') is a form of divination based upon dreams, and also uses dreams to predict the future. Oneirogen plants may also be used to produce or enhance dream-like states of consciousness.
Clinical psychiatrist Jan Dirk Blom describes psychonautics as denoting "the exploration of the psyche by means of techniques such as lucid dreaming, brainwave entrainment, sensory deprivation, and the use of hallucinogens or entheogens, and a psychonaut as one who "seeks to investigate their mind using intentionally induced altered states of consciousness" for spiritual, scientific, or ...
A dream has been defined by some (e.g. Encyclopædia Britannica) as a hallucinatory experience during sleep. A lucid dream may be defined as one in which the dreamer is aware that they are asleep and dreaming. The term 'lucid dream' was first used by the Dutch physician Frederik van Eeden, [12] who studied his own dreams of this type. The word ...
Hypnagogia is the transitional state from wakefulness to sleep, also defined as the waning state of consciousness during the onset of sleep. (Its corresponding state is hypnopompia –sleep to wakefulness.)