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

doi:10.1179/016164101101198613

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 › peer-review

24 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 language	English
Pages (from-to)	397-404
Number of pages	8
Journal	Neurological Research
Volume	23
Issue number	4
DOIs	https://doi.org/10.1179/016164101101198613
Publication status	Published - Jul 3 2001

Keywords

Fractal dimension
Parkinson's disease
Spinocerebellar ataxia
Static stabilometry

ASJC Scopus subject areas

Neurology
Clinical Neurology

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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.",

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AU - Manabe, Y.

AU - Honda, E.

AU - Shiro, Y.

AU - Sakai, K.

AU - Kohira, I.

AU - Kashihara, K.

AU - Shohmori, T.

AU - Abe, K.

PY - 2001/7/3

Y1 - 2001/7/3

N2 - 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.

AB - 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.

KW - Fractal dimension

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KW - Spinocerebellar ataxia

KW - Static stabilometry

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

Abstract

Keywords

ASJC Scopus subject areas

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