Regions showing significant group and medication effects during the decision phase.

fROIs are displayed in Figure 3 (right column; yellow). Brodmann areas (BA) were defined by the Talairach and Tournoux atlas. Coordinates represent distance in mm from anterior commissure: x, right(+)/left (−); y, anterior (+)/posterior (−); z, superior (+)/inferior (−). B  =  bilateral hemispheres; L =  left hemisphere; R  =  right hemisphere; GP  =  globus pallidus.
1This column designates areas wherein the temporal dynamics of activation during the second half of the hemodynamic response (decision period) differed between the control and PD OFF groups (G X T).
2This column designates areas wherein the temporal dynamics of activation differed between the OFF and ON medication conditions (Med X T).