O2-E-65. Evaluation of spinal dorsal column stimulation using the SEP collision method

Spinal Cord Stimulation for Intractable Pain Evaluated by a Collision Study Using Somatosensory Evoked Potentials: A Preliminary Report

“…) . The result of SEP in this patient has been reported elsewhere . The other three poststroke patients showed various pain patterns, including one patient with Type 1 patterning and two patients with Type 2 (Table , Fig.…”

“…If a larger trial reproduced their results, this method could prove to be intraoperatively useful and could allow single‐stage SCS surgery. We confirmed the usefulness of this method during surgery and, furthermore, we developed this method to evaluate a patient who underwent permanent implantation of an SCS system.…”

“…Although the SCS electrode was placed in the cervical region in two cases, SEP collision using PTN stimulation could be evaluated. These two cases are reported elsewhere .…”

“…When the spinal electrode showing the maximum SEP was stimulated, sufficient paresthesia could be induced in the corresponding peripheral body area . Evaluation of electromyograms or peripheral nerve activities after spinal cord stimulation. The relation between the side of the spinal cord and SCS electrode position was determined by detecting the laterality of these activities. Evaluation of the SCS interference on SEPs or “SEP collision” .…”

“…Moreover, if we adjusted both ascending and descending volleys to be more synchronized, a more apparent reduction in SEP amplitude would be obtained ; however, this is beyond the scope of the current study. We, therefore, use the term “SEP collision” in accordance with several previous studies .…”