Fig 3.

Neural population recruitment during bipolar current steering. Spatial activation is shown for each of the two therapeutic neural populations in response to all combinations of adjacent bipolar contact configurations. Stimulation settings within the dashed lines describe no internal capsule activation. The stimulation amplitudes ranged from maximum anodic (−5 mA) to maximum cathodic (+5 mA), with an amplitude resolution of 1 mA. The white dot in the center of the image describes no stimulation.