Figure 1.

Scaled mean maximum footstep latency (MFSL) for a cohort of 19 patients with FOG triggered in response to all doorways, wide doorways and narrow doorways. A statistically significant increase in footstep latency was observed in participants off their medications (OFF) compared to when they were on their medications (ON) in response to all doorways and this was also seen when narrow doorways were subsequently analysed. Wide doorways alone did not elicit a significant difference between the on and off state. Error bars represent SEM