FIG. 7.

a Average fine-timing NSIM values as a function of the number of vocoder filters. The horizontal dashed lines show the empirically determined lower and upper bounds. The lower bound is 0.069 and the upper bound is 0.35. Each fine-timing NSIM value is the product of the “luminance” term and “structure” term as given in Eq. (2). Averages of the fine-timing luminance and structure values for the different conditions are plotted in b, c, respectively. Error bars ± 1 SEM.