Effect of Reference Electrode Position on Normal Distal Motor Latency and Action Potential Amplitude of the Ulnar Nerve

There are many conflicting opinions regarding the placement of the reference electrode in ulnar nerve conduction studies. The purpose of this study is to investigate the effect of reference electrode position on the distal motor latency (DML) and compound muscle action potential (CMAP) amplitude of the ulnar nerve. This study also investigates the effect of gender and dominant versus non-dominant hand (arm) on DML and CMAP amplitude.