Supplementary Figure 4: The TIED holds in human ILD discrimination.

Same format as Fig. 2 of the main text. (a) Psychometric functions (n = 9 human subjects; circles, across-subject mean; lines, across-subjects standard deviation). (b) Discriminability index (left) and criterion (right) for each subject. (c) Chronometric functions ((n = 9; circles, across-subject mean; lines, across-subjects SEM). (d) RTDs for each ILD and for all ILDs combined. (e) Same but with green RTD rescaled (as explained in Methods, Supplementary Fig. 3) to maximize overlap with the orange RTD. (inset) Fraction of variance of the RTD at one ABL explained by the RTD at the other ABL (see Methods). In all panels, green (orange) corresponds to ABL = 40 (60) dB SPL. See Methods for details of the behavioral task.