Author response image 1. Fits to alternative model 1 that uses a threshold on the balance of evidence (BoE) to assign confidence and ignores time.

Graphs follow the same format as in Figure 2 and display the same data (symbols) and axes. The BoE will tend to be greater with longer times. Therefore, this model produces a qualitative mismatch in the middle column. It also predicts that confidence on errors should decrease as a function of motion strength (magenta curves, 3rd column).

DOI: http://dx.doi.org/10.7554/eLife.12192.017