Figure 3

Comparison of detection of locomotion and lying down in a PD patient by the gait monitor (top plot) and from video observation (lower plot) over 24 h. A solid bar indicates that the subject was walking as determined by the gait monitor (upper plot) or video observation (lower plot). A partial observation (dashed line-lower trace only) indicates that the subject was out of view for a portion of the gait event. Shaded regions indicate periods when the subject was lying down. There was full agreement between the gait monitor results and independent video observation.