Specific attentional impairments and complex visual hallucinations in eye disease

Graham, Gemma; Dean, Jennifer; Mosimann, Urs Peter; Colbourn, Chris; Dudely, Rob; Clarke, Michael P; Collerton, Daniel (2011). Specific attentional impairments and complex visual hallucinations in eye disease. International journal of geriatric psychiatry, 26(3), pp. 263-267. Malden, Mass.: Wiley-Blackwell 10.1002/gps.2522

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OBJECTIVE: To test the prediction by the Perception and Attention Deficit (PAD) model of complex visual hallucinations that cognitive impairment, specifically in visual attention, is a key risk factor for complex hallucinations in eye disease. METHODS: Two studies of elderly patients with acquired eye disease investigated the relationship between complex visual hallucinations (CVH) and impairments in general cognition and verbal attention (Study 1) and between CVH, selective visual attention and visual object perception (Study 2). The North East Visual Hallucinations Inventory was used to classify CVH. RESULTS: In Study 1, there was no relationship between CVH (n=10/39) and performance on cognitive screening or verbal attention tasks. In Study 2, participants with CVH (n=11/31) showed poorer performance on a modified Stroop task (p<0.05), a novel imagery-based attentional task (p<0.05) and picture (p<0.05) but not silhouette naming (p=0.13) tasks. Performance on these tasks correctly classified 83% of the participants as hallucinators or non-hallucinators. CONCLUSIONS: The results suggest that, consistent with the PAD model, complex visual hallucinations in people with acquired eye disease are associated with visual attention impairment.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > University Psychiatric Services > University Hospital of Geriatric Psychiatry and Psychotherapy

UniBE Contributor:

Mosimann, Urs Peter








Factscience Import

Date Deposited:

04 Oct 2013 14:18

Last Modified:

19 Feb 2014 15:21

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https://boris.unibe.ch/id/eprint/5748 (FactScience: 210562)

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