fig1

Figure 1. Targeting the DL-STN coordinates of a subject. (A) The axial slice of the red nucleus with the maximal diameter was determined. The x coordinate of the DL-STN was defined 3 mm lateral to the lateral edge of the RN. The y coordinate was defined as the coordinate of a line tangent to the anterior edge of the RN; (B) The z coordinate of the DL-STN was defined 2 mm inferior to the superior edge of the RN. (C) and (D) are the coronal and axial views of the DL-STN coordinates, respectively. DL-STN: Dorsolateral subthalamic nucleus; RN: red nucleus.