(a) Activation map for interaction between effect of contrast and effect of PRE/POST subgroup in the ROI analysis (L BA 21/22) showing greater activation during speech for the postlingual group. (b) Contrast estimates of conditions in the two subgroups showing a larger difference in the postlingual subgroup than in the prelingual subgroup. PostL: postlingual group; PreL: prelingual group; RS: running speech condition; BA: multitalker babble condition.
