Figure 6. Logit regression curve analyses from Figures 3B and 5B were used to calculate predicted balance (0.5 proportion of right responses) for both interaural level and timing differences (ILDs and ITDs), revealing time-intensity trading in all groups.

Predictions of negative ILDs for balanced bilateral input indicated that bilateral stimuli at ILD = 0 was left weighted and predictions of positive ILDs for balanced bilateral input indicated ILDs = 0 was right weighted. The perception of ITDs to stimuli presented at ILD = 0 shifted predictably in each group; linear regressions were significant in both CI groups (p<0.0001) with a trend in the Normal Hearing Group (p = 0.054). Left weighted stimuli shifted balanced perception toward right leading stimuli and right weighted stimuli shifted balanced perception toward left leading stimuli.