Figure 6.

Left inferior frontal and parietal regions were more activated when an item is more perceptually confused with other items from other tone categories compared with items from its category during tone categorization. (A) Tone confusion index was calculated for each item based on the multidimensional pitch height plus direction model. (B) Brain activation in the LIFG and LpIPL were significantly positively correlated with confusion scores. LIFG, left inferior frontal gyrus; LpIPL, left posterior inferior parietal lobule. Voxel-wise P < 0.005; cluster-size FWE-corrected P < 0.05. This figure is visualized on the standard rendered cortex surface. The threshold was set to voxel-wise P = 0.01 for visualization purpose.