Fourier-Based Footfall Placement Variability in Parkinson’s Disease

<p><i>Footfalls of a high PD person (1</i><sup><i>st</i></sup><i> vs. 7</i><sup><i>th</i></sup> order Fourier series fit) (a) The COP coordinates of each footfall from a representative trial of a person with high PD are shown with a 1st order Fourier series fit. (b) A 7th order Fourier series (FPV=7), which was the best fit, is shown. The walking direction was left to right.</p>

BioMed Research International

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Figure 2

Figure 2: Fourier-Based Footfall Placement Variability in Parkinson’s Disease 