Patent ID: 8342685

Claim:
A system for measuring the visual perception span and/or speed of a subject, comprising: a display device that displays a plurality of visual indicia in a two-dimensional spatial arrangement corresponding to one or more concentric circles, each of the plurality of visual indicia being capable of activation independent of the other visual indicia; an input device that receives responsive input from the subject selecting from a plurality of input visual indicia in one or more concentric circles, each of the plurality of input visual indicia corresponding to the plurality of visual indicia on the display device; and a test unit operably connected to the display device and the input device, the test unit operable to: (a) cause the display device to display an activated subset of the plurality of visual indicia viewable to the subject, the activated subset of the plurality of visual indicia is displayed in a predetermined spatial range for a first period of time; (b) cause the display device to cease to display the activated subset of the plurality of visual indicia; (c) receive, at the input device, an input from the subject, the input being in response to displaying the activated subset of the plurality of visual indicia, the input designating which of the activated subset of the plurality of visual indicia were previously activated; (d) determine whether a level is complete, wherein: (i) if the determination of step (d) is that the level is not complete, repeating steps (a)-(d); (ii) if the determination of step (d) is that the level is complete, determine whether to advance to another level; (e) determine whether to advance to another level, wherein: (i) if the determination of step (d)(ii) is to advance to another level, increase the predetermined spatial range and repeat steps (a)-(d); and (ii) if the determination of step (d)(ii) is not to advance to another level, process he received input from the subject.