'Mental Imagery Application Protocol' will be applied to this group. The timed up and go test (TUG) and gyko test will be used as mental chronometry tests with the patients of parkinson diesase.Therefore, the walking mental imagery protocol will be applied to this group.

This group will have routin medical treatment.

Before the GYKO test, the patient will be asked to perform mental imagery to visualize a 3-meter distance for five cycles, and the time will be recorded. The TKYT will be administered according to standard protocols.

Mental Imagery Application Protocol:

1. Awareness:

   The therapist will show a video of a typical normal gait for an adult male or female without pathology and compare it with a video of the patient's own gait.

2. Problem Identification/Explanation In the EG, subjects will identify gait problems and compare their gait with their typical gait. They will then use the comparative information for feedback.

3. Progressive Relaxation

4. Mental Imagery of Gait

5. Physıcal Performance Of The gait This protocol will be implemented the day after the initial assessment and will be conducted in 12 training sessions of no more than 90 minutes, three times per week for 4 weeks.

Mental chronometry is a method considered more objective than questionnaires in the assessment of MI, measuring imagery time. In other words, it examines the time difference between the actual physical execution of a movement and the mental imagery of the same movement. In the calculated mental chronometry value, a value of zero indicates perfect synchrony between motor imagery and motor execution. Values above zero indicate that the task was performed faster during motor imagery than during motor execution, and values below zero indicate that the task was performed slower during motor imagery than during motor execution. Patients' actual walking times (MIT) and imagery times (MET) are recorded. The difference in time and the mental chronometry ratio are calculated, and the mental chronometry ratio is evaluated using the following formula.In our study, the timed up and go test (TUG) and the gyko test will be used as mental chronometry tests.

The Tampa Kinesiophobia Scale (TKS) is a 17-question checklist developed to measure fear of movement and re-injury. Items are scored on a 4-point Likert scale (1: Strongly disagree, 4: Strongly agree). A total score is calculated by reversing items 4, 8, 12, and 16. A person receives a total score between 17 and 68. A total score of 37 points or higher indicates a high level of kinesiophobia. As a participant's score increases, so does the severity of their kinesiophobia. The use of the total score is recommended in studies. A Turkish version of the scale was developed and its reliability study was conducted in 2011.

This device, manufactured by Mikrogate and manufactured in Italy, is used as a portable inertial measurement unit for motion analysis and postural stability assessment. The displacement of the center of gravity is analyzed using a computer using a sensor placed on a sling. The patient is asked to walk for 30 seconds.

The Kinesthetic and Visual Imagery Questionnaire (KVIQ), Short Form, was developed to determine the extent to which individuals visualize and feel the imaged movements. It consists of a total of 10 movements measuring five visual and five kinesthetic imagery skills (24). The questionnaire is not a self-report measure but is administered by an assessor. All movements were assessed in a sitting position. The assessor first performed the relevant movement on themselves and then asked the participant to perform the same movement only once. The participant then visualized the movement and rated the visual clarity or intensity of sensations on a five-point ordinal scale. Higher scores indicate greater visual clarity or intensity of sensations.