Comparison of psychometric and neurometric functions. A–C, Area under the ROC was plotted against the duration of target tone, constructing the neurometric and psychometric functions. Gray lines show the individual neurometrics of sustained-response units. Circles and bars show the mean and SD of the psychometrics, respectively. D–F, Neurometrics of On–Off-response units are presented with the psychometrics. G–I, Neurometrics of On-response units are presented with the psychometrics.