The present study explored the use of a technique called stochastic resonance (SR) stimulation that may help individuals with Parkinson Disease maintain balance while walking on challenging surfaces. Impaired balance represents one of the disease symptoms, putting people at risk for falls, partly due to impaired processing of sensory information. SR uses light electrical signals to improve the way the body detects sensations. We wanted to test if SR could help people with Parkinson disease stay steadier while walking. Each participant's optimal SR intensity was determined before they walked on a treadmill in a virtual environment that created visual disturbances to challenge their balance. We measured how much their body swayed, how they placed their feet, and how their ankles moved during the walking tasks.
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Change in the Center of Mass (CoM) excursion
Timeframe: Through study completion, an average of 1 year.