Routine conventional physical therapy will be applied to patients in the vibration group in 4 weeks and 45 minutes sessions. In addition, right after the sessions, 3 days a week, 30 Hz. frequency vibration will be applied. A vibration session will be as follows; 6 sets of vibrations will be applied, including 1 set of 1 minute vibration and 2 minutes of rest.

Routine conventional physical therapy will be applied to the control group in 4 weeks and 60 minute sessions.

Routine conventional physical therapy will be applied to patients in the vibration group in 4 weeks and 45 minutes sessions. In addition, right after the sessions, 3 days a week, 30 Hz. frequency vibration will be applied. A vibration session will be as follows; 6 sets of vibrations will be applied, including 1 set of 1 minute vibration and 2 minutes of rest.

Muscular activation of the forearm extensor group muscles will be measured with the Electromyography device. Electromyography measurements will be measured before and after application of vibration. In electromyography measurements, active electrodes will be placed in the motor point of the muscle, and passive electrode will be placed on any muscle body in the other arm, three times measurement will be made and average values will be recorded. Surface electrodes will be used. The measurements will be recorded as the individual attempts to flex the wrist. While measuring, the volunteers will be ensured to take a comfortable position. Muscular activation; Surface electromyography data will be recorded using "Myomonitor Wireless Electromyography Systems" Delsys branded Electromyography device. The conductivity band of the electromyography amplifier is 20-450 Hz, its gain is 1000 Hz, and the average noise recovery rate is> 80 decibel.

Wolf Motor Function Test : Test is an evaluation developed to evaluate motor skill in patients with moderate to severe upper extremity motor deficits. For 15 activities, data are collected in two areas as "Functional Skills" and "Performance Time". The other two items are evaluated on activity muscle strength. Using the "functional skill scale", each activity is evaluated by the physiotherapist between 0-5 points (0 = Never used the affected hand during activity, 5 = Normal movement). The average score is calculated for the functional skill scale. Accordingly, the patient can score in the range of 0-5 points from this evaluation, and a high score indicates good functional skills. "Performance Time" is recorded in seconds. The maximum time allowed for an activity to be completed is 120 seconds. Performance time is also recorded as 120 seconds for activities that cannot be completed during this period.