PMC6411417_01
Postural and Intention Tremor Examination. The video starts by tremor examination in the deep brain stimulation (DBS) ON state followed by an examination in the DBS OFF state (1 month apart). It is notable that there is limited DBS control of tremor on the right side of the body with significant tremor control on the left side of the body. The stimulation settings for the left-sided lead are interleaving C+, 2-, 2 V, PW = 90 micros, Freq = 125 Hz and C+, 3-, 4 V, PW = 120 micros, Freq = 125 Hz. The stimulation settings for the right-sided lead are C+, 2-, 2.9 V, PW = 90 micros, Freq = 160 Hz.
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The right DBS lead was placed deep and near the border of the thalamic ventralis oralis posterior (Vop) and ventralis oralis anterior (Voa) while the left DBS lead was placed in the anterolateral portion of the subthalamic nucleus (STN) with the lead trajectory also tangent to the posterior subthalamic area (PSA) (Figures 1 and 2).
Postoperative Lead Location Mapping. The dashed red line is the location of the DBS lead based on magnetic resonance imaging. The thalamus (green), striatum (blue), globus pallidus external segment (green), globus pallidus internal segment (orange) and subthalamic nucleus (red) are outlined as shown. The approximate location of the contacts is shown as white dots.
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The right DBS lead was placed deep and near the border of the thalamic ventralis oralis posterior (Vop) and ventralis oralis anterior (Voa) while the left DBS lead was placed in the anterolateral portion of the subthalamic nucleus (STN) with the lead trajectory also tangent to the posterior subthalamic area (PSA) (Figures 1 and 2).