Figure 1.

Overview of the task and its simple Bayesian model. (A) An example of the screen. Subjects were asked to locate an unseen target coin (yellow circle) after observing a splash (blue circle) caused by the coin. The coin location was displayed as feedback after the subjects made a response. Subjects moved the blue line horizontally and estimated the location of the coin. The graded background shows the prior over the coin position. Circles and texts are enlarged for better visibility. (B) Bayesian model of the task. The estimated coin location is the mean of posterior obtained by combining the prior at the center of the screen and the likelihood centered at the splash.