The overarching aim of this project is to modulate the pulse-width during stimulation of pedicle screws and record the response thresholds associated with each PWM setting. During this initial phase of the investigation, no further data will be collected.
Age range
18 Years
Sex
ALL
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CMAP response under three different pulse-width settings
Timeframe: Within operating room upon completion of pedicle screw placement. 1 day