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Fig. 3 | Journal of NeuroEngineering and Rehabilitation

Fig. 3

From: Dealing with the heterogeneous presentations of freezing of gait: how reliable are the freezing index and heart rate for freezing detection?

Fig. 3

Overall time course of the FI (A), and heart rate (B) for FOG (orange), normal gait events (green), and, stopping (blue). The lines with the shaded areas represent the mean values with 95% confidence intervals over the 14 included participants (n = 14). The heart rate was z-transformed and baseline corrected (− 6 to − 3 s.) to account for individual variances in baseline heart rate and heart rate variability. No z-transformation was applied to the FI because these values are usually evaluated based on absolute values rather than relative values. The boxes indicate the time intervals over which the variables are averaged when exporting to Rstudio: baseline (− 6 to − 3 s), preFOG (− 3 to 0 s), and FOG (0 to 3 s). The figures were created with MATLAB (R2019a) and the Fieldtrip toolbox. (FI Freezing Index, FOG Freezing of Gait)

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