FIG. 6.

Interaural cross-correlation thresholds for normal-hearing (left panels) and hearing-impaired (right panels) listeners. Scale on the left gives ICC as equivalent S/N, in dB. Scale on the right, ICC (ρ), provides the corresponding value of the interaural correlation coefficient. Within each listener group, the mean with standard deviation error bars are shown for individual subjects (open symbols) and averaged across subjects (filled symbol). Low frequency data (500 Hz, ○) are plotted on the top row, and high frequency data (4 kHz, ◻; 2 kHz, ⋄, see text for explanation) are plotted on the bottom row. The mean 500-Hz and 4-kHz ICC JNDs for the NH group were −23 and −16 dB, compared with mean 500-Hz and high-frequency ICC JNDs of −22 and −15 dB for the HI group.