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Lookup NU author(s): Dr Urs Mosimann,
Dr Rob Dudley,
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ObjectiveThis study aimed to test the prediction from the Perception and Attention Deficit model of complex visual hallucinations (CVH) that impairments in visual attention and perception are key risk factors for complex hallucinations in eye disease and dementia.MethodsTwo studies ran concurrently to investigate the relationship between CVH and impairments in perception (picture naming using the Graded Naming Test) and attention (Stroop task plus a novel Imagery task). The studies were in two populationsolder patients with dementia (n=28) and older people with eye disease (n=50) with a shared control group (n=37). The same methodology was used in both studies, and the North East Visual Hallucinations Inventory was used to identify CVH.ResultsA reliable relationship was found for older patients with dementia between impaired perceptual and attentional performance and CVH. A reliable relationship was not found in the population of people with eye disease.ConclusionsThe results add to previous research that object perception and attentional deficits are associated with CVH in dementia, but that risk factors for CVH in eye disease are inconsistent, suggesting that dynamic rather than static impairments in attentional processes may be key in this population. Copyright (c) 2013 John Wiley & Sons, Ltd.
Author(s): Collerton D; Mosimann UP; Clarke MP; Dudley R; Makin SM; Redman J; Colbourn C
Publication type: Article
Publication status: Published
Journal: International Journal of Geriatric Psychiatry
Print publication date: 01/12/2013
Online publication date: 05/04/2013
Acceptance date: 22/01/2013
ISSN (print): 0885-6230
ISSN (electronic): 1099-1166
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