Relevant conflict of interest/financial disclosures: Nothing to report.
Cognitive correlates of visual hallucinations in dementia associated with Parkinson's disease†
Article first published online: 21 MAR 2011
Copyright © 2011 Movement Disorder Society
Volume 26, Issue 5, pages 824–829, April 2011
How to Cite
Bronnick, K., Emre, M., Tekin, S., Haugen, S. B. and Aarsland, D. (2011), Cognitive correlates of visual hallucinations in dementia associated with Parkinson's disease. Mov. Disord., 26: 824–829. doi: 10.1002/mds.23525
Full financial disclosures and author roles may be found in the online version of this article.
- Issue published online: 21 APR 2011
- Article first published online: 21 MAR 2011
- Manuscript Accepted: 18 OCT 2010
- Manuscript Revised: 24 SEP 2010
- Manuscript Received: 2 MAR 2010
- Parkinson's disease;
- visual hallucinations;
There may be a relationship between cognitive impairment and visual hallucinations (VHs) in patients with Parkinson's disease (PD). The objective of this study was to compare the cognitive profile of hallucinating vs. nonhallucinating patients with Parkinson's disease dementia (PDD).
The cognitive profile of 86 PDD patients with hallucinations was compared with that of a carefully matched PDD group without hallucinations, all drawn from the baseline assessments of the EXPRESS study with rivastigmine. Logistic regression analysis was employed to identify cognitive measures that have an independent relationship with presence of hallucinations.
Worse choice reaction time was the only independent predictor of hallucinations in the logistic regression. A further analysis of the reaction time tasks showed that response selection deficit as opposed to stimulus discrimination deficit was the main difference between the groups.
These results indicate that attentional control is an important cognitive correlate of VHs in patients with PDD. © 2011 Movement Disorder Society