Accuracy (d′) and response time for explicit factors task difficulty, noise and implicit factor time-order.

<p>Vertical bars represent within-subject SEM. <b>A.</b> Top figure shows d′ values significantly decreased for the nonpreferred time-order trials, as it did for the explicit factors of task difficulty and noise. <b>B.</b> Lower figure shows significantly longer response times for nonpreferred time-order trials. There were no significant differences in response time across task difficulty and noise levels.