Fig 1.

Group z-score maps showing areas of increased BOLD signal during the semantic decision condition compared to the tone decision condition^a and clusters of significant positive and negative activation associated with increased performance on the semantic decision condition of the SDTD task^b, Semantic Fluency Test^c, and Boston Naming Test^d. Maps are presented in radiological convention with left on the picture corresponding to the right hemisphere. The 20 axial slices selected range in Talairach coordinates from z = −29 mm to z = +47 mm.