Figure 2.

(A) Exploratory analyses considered the classifier’s ability to determine by-trial perceptual interpretations, considering each brain region separately. Above-chance accuracy was achieved in left parietal cortex and right temporal cortex, uncorrected for multiple comparisons. Dark points indicate mean accuracy, and error bars indicate standard error. Light lines indicate classification accuracy by subject, with light red lines indicating subjects who had previously heard ambiguous tokens in /s/-biased contexts and light blue lines indicating those who had previously received /∫/-biased contexts.

(B) Follow-up analyses tested whether classification accuracy in these ROIs was related to the behavioral extent of perceptual learning. This relationship was significant when considering only the voxels in left parietal cortex (left panel) but not when considering the voxels in right temporal cortex (right panel). Red points indicate subjects who had previously heard ambiguous tokens in /s/-biased contexts, while blue points indicate those who had heard ambiguous tokens in /∫/-biased contexts.