FIGURE 2.

Blood oxygenation level‐dependent (BOLD) response to bilateral transcranial direct current stimulation (tDCS). (a) Activation maps, calculated from a generalized linear model (GLM), showing areas with a statistically significant BOLD response to bilateral tDCS (first fMRI session), overlaid on coronal (top), axial (middle), and sagittal (bottom) echo‐planar fMRI images of the rat brain. (b) BOLD signal time‐course during the first fMRI session when tDCS was switched on, and (c) BOLD signal time‐course during the second fMRI session when tDCS was switched off, in the left and right sensorimotor cortices, underneath the cathode and anode, respectively. The modeled BOLD response is overlaid on each graph as a black line. A, anterior; L, left; P, posterior; R, right