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FIG. 9. Smooth eye velocity averaged across all 6 subjects for Mid-ramp Extinction (ME), Short Ramp (SR), and Catch trials. PD = 150 ms; target velocity = 20°/s. A: extinction duration (ED) = 600 ms. Gray shading denotes the extinction period for regular ME trials. In the Regular SR and ME Catch trials the target was extinguished after 150 ms and did not reappear: this was expected in the Regular SR trials but was contrary to expectation in the ME Catch trials. B: ED = 400 ms. In the SR Catch trials the target reappeared at the end of the extinction period, contrary to expectation; gray shading therefore denotes the extinction period for both Regular ME and SR Catch trials. In the Regular SR trials the target was extinguished after 150 ms and did not reappear.
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