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Centre for Policy on Ageing | |
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| Specific attentional impairments and complex visual hallucinations in eye disease | | Author(s) | G Graham, J Dean, U P Mosimann |
| Journal title | International Journal of Geriatric Psychiatry, vol 26, no 3, March 2011 |
| Pages | pp 263-267 |
| Source | http://www.interscience.wiley.com/journal/gps |
| Keywords | Visual impairment ; Diseases ; Perception disorders ; Delusion ; Cognitive impairment ; Evaluation. |
| Annotation | The study aimed 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. Two studies of older 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. In Study 1 there was no relationship between CVH and performance on cognitive screening or verbal attention tasks. In Study 2, participants with CVH showed poorer performance on a modified Stroop task, a novel imagery-based attentional task and picture but not silhouette naming tasks. Performance on these tasks correctly classified 83% of the participants as hallucinators or non-hallucinators. The results suggest that, consistent with the PAD model, complex visual hallucinations in people with acquired eye disease are associated with visual attention impairment. (JL). |
| Accession Number | CPA-110815009 A |
| Classmark | BR: CJ: EE: EDD: E4: 4C |
Data © Centre for Policy on Ageing |
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| ...from the Ageinfo database published by Centre for Policy on Ageing. |
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