Crossing Virtual Doors: A New Method to Study Gait Impairments and Freezing of Gait in Parkinson’s Disease

Figure 2

(a) The no doorway (ND) condition along with the red line indicating the end of the trial in that direction, (b) the narrow doorway (NaD) condition, and (c) a visual representation of the two cuboids that represent the placement of the participant’s feet in the virtual environment (note that the image is captured from behind the participant).

(a)

(b)

(c)