| Identifier |
wh_ch13_p621 |
| Title |
Walsh & Hoyt: Visual Hallucinations |
| Creator |
Matthew Rizzo, MD, FAAN; Jason J. S. Barton, MD PhD FRCP(C) |
| Affiliation |
(MR) Department of Neurological Sciences, University of Nebraska; (JJSB) Professor, Medicine (Neurology), Ophthalmology and Visual Sciences, Psychology, The University of British Columbia |
| Subject |
Optic Nerve Diseases; Cerebral Achromatopsia; Prosopagnosia; Acquired Alexia; Akinetopsia; Balint's Syndrome; Positive Visual Phenomena; Visual Loss; Visual Hallucinations |
| 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. |
| Date |
2005 |
| Language |
eng |
| Format |
application/pdf |
| Type |
Text |
| Relation is Part of |
Walsh and Hoyt's Clinical Neuro-Ophthalmology Walsh and Hoyt's Clinical Neuro-Ophthalmology |
| Collection |
Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu |
| Publisher |
Wolters Kluwer Health, Philadelphia |
| Holding Institution |
Spencer S. Eccles Health Sciences Library, University of Utah, 10 N 1900 E SLC, UT 84112-5890 |
| Rights Management |
Copyright 2005. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright |
| ARK |
ark:/87278/s6v15d82 |
| Setname |
ehsl_novel_whts |
| ID |
186666 |
| Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6v15d82 |
