Fig. 1.

The position of deep brain stimulation (DBS) electrodes to anterior nucleus thalami (ANT).

Panel a illustrates the relation between DBS electrodes and ANT in the coronal section. There are 4 contacts on each electrode (contacts are labeled from the most distal to the most proximal as 0, 1, 2, and 3 on the left, and as 8, 9, 10, and 11 on the right). We stimulated the most proximal contacts on both sides, i.e., contact 3 on the left and contact 11 on the right.

Panel b shows the estimated distribution of the electrical field (yellow) and its relation to ANT (blue). On the right, the correct contact for stimulation was chosen. On the left, the more distal contact was more suitable. The figures were obtained using SureTune software (Medtronic, Minneapolis, MN, USA). L — left, R — right.