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Complex visual hallucinations and attentional performance in eye disease and dementia: a test of the Perception and Attention Deficit model.

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Title: Complex visual hallucinations and attentional performance in eye disease and dementia: a test of the Perception and Attention Deficit model.
Authors: Makin, S. M., Redman, J., Mosimann, U. P., Dudley, R., Clarke, M. P., Colbourn, C., Collerton, D.
Source: International Journal of Geriatric Psychiatry. Dec2013, Vol. 28 Issue 12, p1232-1238. 7p. 3 Charts.
Subjects: Dementia research, Eye diseases, Geriatric psychiatry, Diseases in older people, Hallucinations, Perceptual disorders, Attention research, Visual perception
Abstract: Objective This 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. Methods Two 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 populations-older 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. Results A 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. Conclusions The 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 © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Geriatric Psychiatry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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DbLabel: Psychology and Behavioral Sciences Collection
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Complex visual hallucinations and attentional performance in eye disease and dementia: a test of the Perception and Attention Deficit model.
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Geriatric+Psychiatry%22">International Journal of Geriatric Psychiatry</searchLink>. Dec2013, Vol. 28 Issue 12, p1232-1238. 7p. 3 Charts.
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  Data: <searchLink fieldCode="DE" term="%22Dementia+research%22">Dementia research</searchLink><br /><searchLink fieldCode="DE" term="%22Eye+diseases%22">Eye diseases</searchLink><br /><searchLink fieldCode="DE" term="%22Geriatric+psychiatry%22">Geriatric psychiatry</searchLink><br /><searchLink fieldCode="DE" term="%22Diseases+in+older+people%22">Diseases in older people</searchLink><br /><searchLink fieldCode="DE" term="%22Hallucinations%22">Hallucinations</searchLink><br /><searchLink fieldCode="DE" term="%22Perceptual+disorders%22">Perceptual disorders</searchLink><br /><searchLink fieldCode="DE" term="%22Attention+research%22">Attention research</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+perception%22">Visual perception</searchLink>
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  Data: Objective This 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. Methods Two 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 populations-older 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. Results A 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. Conclusions The 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 © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of International Journal of Geriatric Psychiatry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: Dec2013
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