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. 2019 Dec 16;11:340. doi: 10.3389/fnagi.2019.00340

FIGURE 2.

FIGURE 2

A computational model of electric field distribution for F3–F4 placement in one participant. The left hand side depicts the electric field strengths (|EF|) on the cortical surface for F3 (cathode, blue electrode) and F4 (anode, red electrode) montage. |EF| distribution was calculated using a finite element based approach in ROAST (Huang et al., 2019).