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Oneirophrenia. Oneirophrenia (from the Greek words "ὄνειρος" (oneiros, "dream") and "φρήν" (phrēn, "mind")) is a hallucinatory, dream -like state caused by several conditions such as prolonged sleep deprivation, sensory deprivation, or drugs (such as ibogaine). Oneirophrenia is often confused with an acute case of schizophrenia due ...
The objective difference between the subjective experiences of dreams and hypnopompic hallucinations emerges from a close look at the sleep cycle and its attendant brain activity: there are essentially two types of sleep, R.E.M. sleep, which is categorized by "rapid eye movement" and N.R.E.M., which stands for "Non-Rapid Eye Movement".
Hypnagogia. Hypnagogia is the transitional state from wakefulness to sleep, also defined as the waning state of consciousness during the onset of sleep. Its opposite state is described as hypnopompia – the transitional state from sleep into wakefulness. Mental phenomena that may occur during this "threshold consciousness" phase include ...
My Dream, My Bad Dream, 1915, by Fritz Schwimbeck. Several types of hallucinations have been linked to sleep paralysis: the belief that there is an intruder in the room, the feeling of a presence, and the sensation of floating. One common hallucination is the presence of an incubus.
A hallucination is a perception in the absence of an external stimulus that has the compelling sense of reality. [4] Hallucination is a combination of two conscious states of brain: wakefulness and REM sleep. [5] They are distinguishable from several related phenomena, such as dreaming (REM sleep), which does not involve wakefulness ...
Lucid dreams by definition occur during sleep, but they may be regarded as hallucinatory experiences in the same way as non-lucid dreams of a vivid perceptual nature may be regarded as hallucinatory, that is they are examples of 'an experience having the character of sense perception, but without relevant or adequate sensory stimulation ...
The capacity to have lucid dreams is a trainable cognitive skill. [1] During a lucid dream, the dreamer may gain some amount of volitional control over the dream characters, narrative, or environment, although this control of dream content is not the salient feature of lucid dreaming. [2][3][4][5] An important distinction is that lucid dreaming ...
A painting depicting Daniel O'Connell dreaming of a confrontation with George IV, shown inside a thought bubble. A dream is a succession of images, ideas, emotions, and sensations that usually occur involuntarily in the mind during certain stages of sleep. [ 1 ] Humans spend about two hours dreaming per night, [ 2 ] and each dream lasts around ...
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