Patent ID: 8562541

Claim:
A method to evaluate functional impairment in a brain of a subject, said method comprising the steps of: performing a visual motion discrimination test, said visual motion discrimination test assessing a subject's ability to visually follow movement, said visual motion discrimination test comprising the following steps executed on a processor: presenting at least one scene to said subject on a display, said scene comprising a plurality of elements and a background; moving said plurality of elements relative to said scene, said movement being tracked by said subject via at least one input device; receiving feedback from said subject via said input device; quantitatively refining said received feedback relative to said scene; modulating said movement relative to accuracy of said quantitatively refined feedback, said modulated movement associated with a predetermined target; calculating a critical threshold parameter for said subject; recording said critical threshold parameter onto a non-transitory computer readable medium; and using said critical threshold parameter in assessing, evaluating, or determining at least one functional impairment in a brain of said subject.