Effect of limb on current intensity used for SEP
muscle contraction
Our results showed a significant effect of the independent variable “limb” on the dependent variable “current intensity used for SEP”. Further analysis showed that the current intensity used in tibial nerve SEP was significantly higher than that used in median nerve SEP. Since the current intensity was set to reliably produce a muscle contraction, this result indicates that a higher current intensity was needed to fulfill this criterion over the tibial nerve than over the median nerve. This is most likely due to anatomical reasons, since the median nerve is located more superficially at the stimulation site than the tibial nerve.