Figure 1 - Source Data 2 Decision boundary estimated from psychometric curves, for example mice (each row contains data from one animal) LowBound HighBound 0.0894290276420498 0.114288725906905 0.0855295642440753 0.106975253289227 0.0863112245162851 0.10836081090206 0.0825022914442471 0.111496551922457 0.090087578026269 0.127574421076133 0.0914294657485377 0.112199488184853 0.0885915555838571 0.106618965926175 0.0927332160731517 0.128706872889609 0.0896183515583537 0.115299806745739 0.0847020090779371 0.107274791338648 ____________ Test results Column B HighBound vs. vs. Column A LowBound Wilcoxon matched-pairs signed rank test P value 0.0020 Exact or approximate P value? Exact P value summary ** Significantly different (P < 0.05)? Yes One- or two-tailed P value? Two-tailed Sum of positive, negative ranks 55 , 0 Sum of signed ranks (W) 55 Number of pairs 10 Median of differences Median 0.02372 How effective was the pairing? rs (Spearman) 0.7212 P value (one tailed) 0.0117 P value summary * Was the pairing significantly effective? Yes