Fig. 2: A realistic high-resolution MRI-based rat computational model and predicted average current density and power dissipation

a Illustration of render of bone generated from images and segmented for the FEM model. b Electrode positioning on the entire model with transparent skeleton, brain, spines and electrodes. The red pellet-shaped anode electrode and blue cathode electrode are positioned as aforementioned. c Uniformly seeded streamlines from the top surface of the anode electrode that were proportional to the logarithm of current density magnitude. Trajectories of the streamlines predict direct current flow across different brain tissues. d Predicted current density at the surface of the brain and a slice view of the distribution showing peak current density during tDCS. Lowest brain current density values are represented in blue, and greater brain current density values are represented in dark red. e Average current density across the cortex following anodal tDCS. f Average power dissipation across the cortex following anodal tDCS. The dotted lines in both e, f illustrate the boundary of the electrode in accordance to bregma