Research Article

BrainK for Structural Image Processing: Creating Electrical Models of the Human Head

Figure 15

((a), (b)) Using BrainK’s anatomy in the reciprocity visualization environment software to show the electrical field at the head surface (positive potential at red electrodes and negative potential at blue electrodes) created by electrical activity in auditory cortex (dipoles shown as gold arrows seen best in the inflated cortex at (b)). ((c), (d)) Through reciprocity theory, the field pattern of the cortical sources can be used to estimate the optimal electrodes (sources: red, sinks: blue) to impress electrical current on the auditory cortex for neuromodulation. Here, the impressed cortical current density is imaged with a hot metal palette (gold, orange, and yellow), thresholded at 50% of maximum.
(a)
(b)
(c)
(d)