1. Subjective confidence informs environment choices.
Subjective confidence informs environment choices. (A) Six subjects performed a modified changing environment task with simultaneous report of motion direction confidence. The task structure is identical to our main experiment except that the targets are replaced with elongated bars (length 7°). Subjects varied the end point of their eye movements along the length of the bar to indicate motion direction choice confidence (green, minimal confidence; red, maximal confidence) (4). (B) Subjects were more likely to switch environment choices following negative feedback on trials in which they reported higher subjective confidence. Data points show the mean proportion of environment switches as a function of the saccade end point along the length of each target. Saccade end points are divided into six quantiles. (C) Subjects were more likely to switch environment choices when subjective confidence was higher for the same motion strength and duration. Probability of switching is plotted as a function of residual variations of saccade end points after subtracting the mean of end points for the motion strength and duration (SI Text). Error bars are SE.
Braden A. Purcell, and Roozbeh Kiani PNAS 2016;113:31:E4531-E4540
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