Colored maps of electric field distribution.

Colored field maps for the D–B80 (a) and for the H7 (b) showing electric field distribution within the brain, when located at the treatment location over the prefrontal cortex, indicating the electric field absolute magnitude in each pixel over 14 coronal slices 1 cm apart. The maps were adjusted to the average percentage of the maximal stimulator output required to achieve 100% of the leg rMT, which are 53% for the D–B80 and 54% for the H7. The red pixels indicate field magnitude ≥ the threshold for neuronal activation, which was set to 100 V/m.