期刊
PARKINSONISM & RELATED DISORDERS
卷 61, 期 -, 页码 26-33出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.parkreldis.2018.11.013
关键词
Parkinson's disease; Virtual reality; Freezing of gait
资金
- Institutional Development Award (IDeA) from the National Institute of General Medical Sciences of the National Institutes of Health [5P20GM109025]
Introduction: Freezing of gait is an episodic inability to move the feet forward despite the intention to walk. It is a common cause of falls and subsequent morbidity and mortality in Parkinson's disease. Virtual reality paradigms provide an opportunity to safely evaluate freezing of gait, in order to better understand the underlying pathophysiology. This article focuses on the methodology, threshold used to define freezing of gait, results, limitations of studies using virtual reality paradigms, and proposes future directions of research. Summarizing these articles improves our understanding of freezing of gait in Parkinson's disease, and critical evaluation provides an opportunity for future studies to improve upon these efforts. Methods: We performed a systematic review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement guidelines, of studies using VR paradigms to elucidate the underlying pathophysiology of PD-FOG. Results: This review initially identified 57 articles, but after exclusion of duplicates, abstracts, and studies not focused on the underlying pathophysiology of this disorder, 12 peer-reviewed articles using virtual reality paradigms to evaluate freezing of gait in Parkinson's disease were found. Conclusion: Virtual reality paradigms are able to reproduce freezing of gait. Studies using MRI compatible virtual reality to evaluate freezing of gait found dysfunctional connectivity between cortical and subcortical structures during episodes. However, several important limitations of these studies should caution our interpretation of these results. Future studies which improve the design and methodology are needed to ultimately identify the cause and subsequent treatments for freezing of gait in Parkinson's disease.
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