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Eyes downCurrently , psychologists test players ' reactions to the ball and eye movements using virtual-reality systems or giant video screens hooked up to joysticks . Working simultaneously on the local and national levels provided an opportunity both to field test elements of the policy and also to forge greater cooperation and respect between these levels of government , which was crucial if the policy was to be implemented successfully . " We test newborns now for other important disorders , " Walsh said . Preliminary results with the transgenic mice have been very promising in that of the approximately 40 chemicals screened to date , test outcomes are comparable to those reported for the rodent bioassay . This DirAc IC prototype provides direct acquisition capability for test receivers and also demonstrates the feasibility of performing direct acquisition over extended regions of time and frequency uncertainty .