Fig. 2.

Activation extent and magnitude. The forward>reverse sentences statistical map for each participant was thresholded voxelwise at P < 0.01 with a lenient cluster size threshold (k ≥ 4). Controls (blue; left distribution of each plot) and LHPS participants (purple; right distribution of each plot) were compared using independent samples t-tests, and the uncorrected P-values are shown above the brackets in each plot. (A) We examined two measures of activation extent: the number of active voxels (left) and the average size of the activation clusters in each participant’s statistical map (right). (B) We examined two measures of activation magnitude: the average t-value (left) and the maximum t-value (right) across all voxels that survived the voxelwise threshold.