Comparison of Sensory Cuing Modalities for Freezing of Gait

As Parkinson's disease progresses, the patients develop 'Freezing of gait', which make it difficult to initiate gait, turn at the corner, and enter a narrow space. This is considered to be a very important symptom, as it is related to the performance of daily activities, independence of life, and serious injuries caused by falls while walking in Parkinson's disease patients. It has been found that the use of external sensory stimulation (visual, auditory) can reduce the symptoms of Freezing of Gait, and is used as rehabilitation treatment and instant symptomatic resolution. However, the relative effectiveness of sensory stimulation is not studied yet. Accordingly, the investigators intend to compare the effects of visual and auditory sensory cues on the resolution of freezing of gait in patients with idiopathic Parkinson's disease.