Choice of saccade endpoint under risk


We ask whether human observers choose saccade endpoints that maximize expected gain when there are explicit rewards associated with correctly detecting the target in a visual search task. We compared human saccade endpoints to those of an ideal observer that maximizes expected gain given the respective map of target visibility as a function of retinal location. Varying the location of the highest reward had a significant effect on human observers’ distribution of saccade endpoints, but humans’ overall spatial distributions of saccade endpoints differed significantly from the ideal observer.