A method and system are presented to address quantitative assessment of visual motor response in a subject, where the method comprises the steps of: (1) presenting at least one scene to a subject on a display (2) modulating the contrast of a predetermined section of the scene (3) moving the predetermined section relative to the scene with the movement being tracked by the subject via at least one input device (4) measuring a kinematic parameter of the tracked movement (5) quantitatively refining the tracked movement (6) determining the relationship between at least one of the scene and the quantitatively refined tracked movement (7) adjusting the modulated contrast relative to the quantitatively refined tracked movement (8) calculating a critical threshold parameter for the subject and (9) recording a critical threshold parameter onto a tangible computer readable medium.
