Motor function analysis system and operational method of system

A motor function analysis system for analyzing a motor function of a subject and making disease determination and evaluation about the subject based on the motor function analysis, said system comprising:

• a display unit for displaying image information including a moving target image and a cursor image for tracking said target image;
• a tracking unit in communication with the display unit, wherein the subject moves the cursor image on the display unit with the tracking unit when tracking the moving target image, the tracking unit including a sensor detecting at least one of a position, a velocity and a torque of a part of the subject that is involved in manipulating the tracking unit;
• and
• a computer having a display in communication with the display unit and the tracking unit,
• wherein the computer detects and graphs on the display a tracking status of the target image tracked by the cursor image on the display and determines a frequency of movement components contained in the tracking status,
• wherein the computer separates a first frequency domain relating to a predicted movement component, a second frequency domain relating to a feedback movement component, which is higher than the first frequency domain, and a third frequency domain relating to a disease-induced movement component, which is higher than the second frequency domain, from the frequency of movement components, and wherein the computer determines a quantitative diagnostic index regarding a motor function of the subject according to a ratio of a quantity of the disease-induced movement component obtained from an integrated value of the third frequency domain and a quantity of the predicted movement component obtained from an integrated value of the first frequency domain, and
• wherein the quantitative diagnostic index is used to make disease determination and evaluation about the subject.