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Hallucination - Wikipedia, the free encyclopedia
A visual hallucination is "the perception of an external visual stimulus where none exists". Alternatively, a visual illusion is a distortion of a real external stimulus.
https://en.wikipedia.org/wiki/Hallucination

Hallucination | Encyclopedia of Psychology
A hallucination is a sensation or sensory perception that a person experiences in the absence of a relevant external stimulus. That is, a person experiences
http://psychcentral.com/encyclopedia/hallucination/

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2660156/
We would like to show you a description here but the site won’t allow us.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2660156/

Hallucination - definition of hallucination by The Free ...
hal·lu·ci·na·tion (hə-lo͞o′sə-nā′shən) n. 1. a. Perception of visual, auditory, tactile, olfactory, or gustatory experiences without an external stimulus ...
http://www.thefreedictionary.com/hallucination

hallucination | BehaveNet
This psychotic symptom found in a variety of serious mental disorders involves sensory perceptual distortions, for example seeing (visual), hearing (auditory ...
http://behavenet.com/hallucination

Auditory hallucination - Wikipedia, the free encyclopedia
A paracusia, or auditory hallucination, is a form of hallucination that involves perceiving sounds without auditory stimulus. Auditory hallucinations need to be ...
https://en.wikipedia.org/wiki/Auditory_hallucinations

hallucination | psychology | Britannica.com
Hallucination, Daumier, Honoré: Caricature of hallucinating physician National Library of Medicine, Bethesda, Maryland the experience of perceiving objects or events ...
http://www.britannica.com/topic/hallucination

Hallucination Treatments - News Medical
Hallucinations can be extremely distressing but they are usually the result of an identifiable cause that a sufferer may be able to receive treatment for.
http://www.news-medical.net/health/Hallucination-Treatments.aspx

Hypnagogic hallucination - Neurological disorders
Hypnagogic hallucination is episodes of seeing and hearing things as one is falling asleep. Hypnagogic hallucinations can occur at sleep onset.
http://neurology.health-cares.net/hypnagogic-hallucination.php

Oliver Sacks: What hallucination reveals about our minds ...
Neurologist and author Oliver Sacks brings our attention to Charles Bonnet syndrome -- when visually impaired people experience lucid hallucinations. He describes the ...
http://www.ted.com/talks/oliver_sacks_what_hallucination_reveals_about_our_minds

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