Figure 1.
Effect of coil orientation. (A) E-field gradients along the tracts for coil orientations of 0 (A-P), 45°, and 90°, in the hand knob of the motor cortex (precentral gyrus) viewed from above. The color-scale is normalized to the maximum of the E-field gradient across tracts. (B) Maximal E-field gradients for white matter tracts projected on the intermediate cortical surface for three different coil orientations (green arrow) for the same three coil orientations. The maximum of the color-scale corresponds to the maximum across the three coil orientations. For corresponding movies that show finer grading of coil orientations, see Supplementary material.