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Visuospatial dysfunction in the neurodegenerative diseases.

David S Geldmacher1

  • 1Department of Neurology, University of Virginia, PO Box 800394, Charlottesville, VA 22908, USA. dsg8n@virginia.edu

Frontiers in Bioscience : a Journal and Virtual Library
|September 6, 2003
PubMed
Summary

Visuospatial dysfunction is common in Alzheimer's disease (AD) and Parkinson's disease (PD), despite not being cardinal features. This review explores the prevalence, impact, and theoretical models of these visual deficits in neurodegenerative conditions.

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Gerontology

Background:

  • Visuospatial dysfunction is often overlooked in common late-life neurodegenerative diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), and Dementia with Lewy bodies (DLB).
  • Existing research indicates a surprisingly high prevalence of visual disorders within these patient populations.
  • Challenges in recognition stem from a fragmented literature, lacking uniform definitions and theoretical models for visuospatial dysfunction.

Purpose of the Study:

  • To review the theoretical and practical aspects of visual dysfunction in neurodegenerative disorders.
  • To examine the prevalence, significance, and correlates of these visual deficits.
  • To address the functional impact of visuospatial impairments in affected individuals.

Main Methods:

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  • Literature review synthesizing findings from numerous research studies.
  • Analysis of theoretical frameworks and experimental approaches to visuospatial function.
  • Examination of the interplay between visuospatial skills, attention, and executive functions.

Main Results:

  • Visuospatial problems are more pervasive in AD, PD, and DLB than commonly recognized.
  • The complexity of defining and measuring visuospatial dysfunction complicates research.
  • Interactions with attention and executive functions further complicate the assessment of visuospatial deficits.

Conclusions:

  • Visuospatial dysfunction is a significant, albeit often underappreciated, feature of major neurodegenerative diseases.
  • Standardized definitions and theoretical models are needed for better understanding and research.
  • Addressing these visual deficits is crucial for comprehending the full functional impact of neurodegeneration.