Walsh & Hoyt: Visual Hallucinations

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Identifier wh_ch13_p621
Title Walsh & Hoyt: Visual Hallucinations
Subject Optic Nerve Diseases; Cerebral Achromatopsia; Prosopagnosia; Acquired Alexia; Akinetopsia; Balint's Syndrome; Positive Visual Phenomena; Visual Loss; Visual Hallucinations
Creator Matthew Rizzo, M.D., F.A.A.N., Department of Neurological Sciences, University of Nebraska; Jason J S Barton, MD PhD FRCP(C), Professor, Medicine (Neurology), Ophthalmology and Visual Sciences, Psychology, The University of British Columbia
Description Hallucinations are perceptions without external stimulation of the relevant sensory organ. Individuals vary in the degree of insight they possessthat is, whether they recognize these experiences as being ""not real."" Some propose the term ""pseudohallucinations"" for experiences with preserved insight. However, insight can fluctuate over time in an individual (sometimes it is gained only after attempted interaction with the phantom) and can vary within a group with a common pathology. Also there is no proof that insight has any pathogenetic significance, other than that it may correlate with the degree of associated cognitive or psychiatric impairment. Therefore, the term ""hallucinations"" is probably best used for all such experiences, regardless of insight.
Publisher Spencer S. Eccles Health Sciences Library, University of Utah
Date 2005
Type Text
Format application/pdf
Format Creation application/pdf
Relation is Part of Neuro-Ophthalmology Virtual Education Library (NOVEL)
Rights Management Copyright 2012. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright
Holding Institution Spencer S. Eccles Health Sciences Library
Collection Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu
Language eng
ARK ark:/87278/s6v15d82
Setname ehsl_novel_novel
Date Created 2012-06-05
Date Modified 2021-05-06
ID 186666
Reference URL https://collections.lib.utah.edu/ark:/87278/s6v15d82