FIG. 9.

Two-dimensional representations of fusion ranges collected in separate trials with the left or right ear as the reference. Vertical lines show fusion ranges obtained with the right ear as the reference. Horizontal lines show fusion ranges obtained with the left ear as the reference. Data are shown for HI07 (left panel) and HI25 (right panel). Again, open square symbols indicate the upper and lower frequency limits of the frequency range tested. Shaded regions show “fusion areas” which are demarcated by the upper and lower boundaries of the fusion ranges. Any dichotic frequency pairs within the fusion area may be perceived as one sound. Filled and open circles indicate the pair frequencies for which pitch averaging and lower-pitch dominance were observed, respectively. Only data obtained with interleaved tasks are shown.