An exercise program has been prepared for patients for use in mirror therapy. In this exercise program, firstly, joint movements of the hand and fingers (opening and closing the fingers one by one, making a fist, moving the hand to the right and left, turning the wrist) are shown. Then, activities with some small objects used in daily life (squeezing ball, putting clothespins, collecting paper clips from the table, using tongs, turning cards, turning pages) is shown. The patient will repeat the movement for 3 minutes. The patient will hold the affected extremity behind the mirror with the healthy extremity, the patient will look towards the affected side from the mirror and try to do the movements with the affected extremity. . The treatment period will be 20 sessions, 5 days a week, for 4 weeks.The exercises will take 1 hour, including half an hour of mirror therapy and half an hour of conventional exercises.

An exercise video has been prepared for the patients to watch for the action observation therapy. In this video, first of all, joint movements of the hand and fingers (opening and closing the fingers one by one, making a fist, moving the hand to the right and left, turning the wrist, etc.) are shown. Then, activities with some small objects used in daily life (squeezing ball, putting clothespins, collecting paper clips from the table, using tongs, turning cards, turning pages, etc.). is shown. The patient will first watch the video of each movement, and then repeat the movement for 3 minutes. The treatment period will be 5 days a week, a total of 20 sessions for 4 weeks.The exercises will take 1 hour, including half an hour of action observational therapy and half an hour of conventional exercises.

Conventional therapy includes range of motion exercises, walking and balance exercises. The treatment period will be 5 days a week, a total of 20 sessions for 4 weeks. The exercises will last for half an hour daily.

15 patients will be recruited to each group. Patients will receive a total of 20 sessions of treatment, 5 days a week.

The Movement Disorder Society-Sponsored Revision of the Unified, which is used to evaluate the symptoms and signs of Parkinson's Disease, consists of a total of 4 chapters and 42 items. Each item is scored between 0 (normal) and 4 (most severe). The scores obtained are evaluated as a percentage. As the total score increases, it is understood that the mental status for the first part and the functional status for the other parts are worse. In this study, the motor part of the evaluation scale will be used. The patients will be evaluated three times. Once in the beginning (before the study), second evaluation will be made in the 1st month after the treatment and the 3rd month after the treatment the 3rd evaluation will be made. The change in the results of the scale (The Movement Disorder Society-Sponsored Revision of the Unified) evaluating the improvement in hand functions will be evaluated.

Hand rough grip strength will be measured with a Jamar hydraulic hand dynamometer. A pinchmeter will be used for lateral, tip and triple grip measurement.

The Jamar dynamometer has five stages. Measurements will be made in the position of the jamar suitable for the hand size of the patients, in the dominant extremity, with the patients in an upright position, shoulder adduction, elbow 90 degrees flexion, anterior colmidrotation and wrist 30 degrees extension, and maximum voluntary grasping will be requested from the patients. Measurements will be made 3 times and the average value will be recorded in kilograms. The patients will be evaluated three times. Once in the beginning (before the study), second evaluation will be made in the 1st month after the treatment and the 3rd month after the treatment the 3rd evaluation will be made. The change in the Hand and Finger Grip Strength will be evaluated.