Upper extremities are the first part of the body to be affected by Parkinson's disease. Although studies have shown that virtual reality-assisted rehabilitation methods are effective on gait and balance, studies on their use for upper extremity rehabilitation are limited. For this reason, the aim of the project is to examine whether virtual reality supported upper extremity position matching exercises, which will be specially prepared according to joint ranges of motion, will provide functional improvement in the upper extremities of individuals with Parkinson's disease.