Fractal dimension analysis of static stabilometry in Parkinson's disease and spinocerebellar ataxia

Y. Manabe, E. Honda, Y. Shiro, K. Sakai, I. Kohira, K. Kashihara, T. Shohmori, K. Abe

Research output: Contribution to journal › Article

23 Citations (Scopus)

Abstract

The static stabilometry patterns associated with Parkinson's disease (PD, n = 15) and spinocerebellar ataxia (SCA, n = 15) were compared with those of normal control (n = 15) by measuring the fractal dimensions. Fractal dimensions were estimated using the modified pixel dilation (mPD) method. The fractal dimensions with closed eyes showed a significant correlation with Environmental area for SCA group (p < 0.05). The fractal dimension for SCA group was significantly higher with closed eyes than that with open eyes (p < 0.05). The fractal dimension with closed eyes was significantly higher in PD and SCA groups than that in normal group (p < 0.05). The fractal dimension with closed eyes was higher when the clinical stage was more severe with PD and SCA group while Environmental and Longitude/Environmental areas were not. These findings suggest that the fractal dimension is more sensitive than traditional stabilometric analysis in an evaluation of postural instability in PD and SCA.

Original languageEnglish
Pages (from-to)397-404
Number of pages8
JournalNeurological Research
Volume23
Issue number4
DOIs
Publication statusPublished - Jul 3 2001

Keywords

  • Fractal dimension
  • Parkinson's disease
  • Spinocerebellar ataxia
  • Static stabilometry

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

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