The effectiveness of deep brain stimulation in improving upper and lower extremity function under dual task conditions in Parkinson?’s disease patients

Parkinson?’s disease (PD) is a progressive neurodegenerative disorder characterized by reduced movement. Postural instability and gait dysfunction (PIGD) is one of the more debilitating symptoms of PD due to its effect on activities of daily life and increased risk for falls. In later stages of the disease, cognitive impairment affects executive...