Content area
Full Text
Received Jun 20, 2017; Accepted Oct 23, 2017
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
1. Introduction
Up to 75% of people with Parkinson’s disease (PD) have impaired postural control, which can often lead to postural instability and an increased risk of falls as a consequence [1]. While postural instability in PD may involve dysfunctions in several subsystems [2, 3], it is the impaired multimodal integration of sensory feedback from the visual, proprioceptive, and vestibular systems that can predominantly contribute to deficits in gait and balance [4, 5] as seen in other neurological conditions [6, 7]. Moreover, since dopaminergic medications have limited effects on postural instability in...