Fig. 2. Bottom. FMRI activation map for the semantic decision–tone decision comparison. The data are formatted as in Figure1. The blue-cyan color scale codes probability values for voxels activated by the tone decision task relative to the semantic decision task. Left temporal lobe activation by the language task is demonstrated in the STS and MTG (L60-48), ITG (L54-48), fusiform gyrus (L42-30), and parahippocampus (L30-18). The left angular gyrus is activated over a large region (L54-30). Left frontal activation involves the entire IFG (L54-36), rostral and caudal (but not central) middle frontal gyrus (L42-24), and superior frontal gyrus rostral to the SMA (L24-6). On the medial wall, there is activation spreading into anterior cingulate (L6) and a focus involving retrosplenial cortex and neighboring precuneus (L12-6). The posterior right cerebellum is activated by the semantic decision task (R6-42). Small language activation foci are noted in the left anterior thalamus and caudate, left medial cerebellum, right retrosplenial region, and right angular gyrus. Portions of the premotor cortex, planum temporale, supramarginal gyrus, and right MTG were activated more strongly by the tone decision (control) task (i.e., showed relative signal “decreases” during the semantic decision task).