Patent ID: 8226237

Claim:
A system for delivering a touch sensitive screen task to a subject, the system comprising: a touch sensitive display unit for presenting visual stimuli to a subject and for providing responses of said subject to at least some of said visual stimuli, wherein said subject's view of said touch sensitive display unit is at least partially blocked by a hand of said subject while said subject indicates a response on said touch sensitive display unit; at least one hand position monitoring unit to be engaged by said hand of said subject while said subject is not indicating a response, said hand position monitoring unit being locatable relative to said touch sensitive display unit such that said hand does not block any portion of said touch sensitive display unit from said subject's view while said hand is engaging said hand position monitoring unit, and said hand position monitoring unit providing output signals indicating whether said hand position monitoring unit is engaged by said hand; and a controller/processor unit operatively coupled to said touch sensitive display unit and to said at least one hand position monitoring unit for receiving said output signals from said at least one hand position monitoring unit and for processing at least said output signals to control the displaying of said visual stimuli on said touch sensitive display unit; wherein said visual stimuli correspond to a visual test; wherein said controller/processor unit is configured to pause a visual stimulus for allowing said subject to indicate said response when said at least one hand position monitoring unit is not engaged by said hand, and said controller/processor unit is configured to cause a subsequent visual stimulus to be displayed when said hand of said subject is returned to engage said at least one position monitoring unit.