Figure 1.
Pre-operative surface EMG of the right anterior tibialis in the movement neurophysiology laboratory shows well-formed, continuous, and rhythmic 13 Hz tremor bursts, which are noted immediately upon standing in place from a seated position. The tracing shows a 2-second epoch.
Figure 2.
3-month postoperative surface EMG of the right anterior tibialis in the movement neurophysiology laboratory demonstrates less continuous, less rhythmic, and slower frequency (5–10 Hz) tremor bursts. The tracing shows a 2-second epoch.
Figure 3.
Intraoperative surface EMG recordings of the right anterior tibialis prior to stimulation with the patient supine in the operating table shows irregular 12–15 Hz tremor bursts while having the patient push down on the leg against resistance. The tracing shows a 1-second epoch. RATIB, Right anterior tibialis (muscle).
