Impact of reference electrode position on motor unit number estimation (MUNE) in the tibialis anterior muscle using MScanFit: test-retest reliability

Compound muscle action potential (CMAP) scans were done using the MScanFit MUNE protocol, stimulating the fibular nerve and monitoring the response from the tibialis anterior muscle. There are two cohorts of data: 1) cohort #1 was collected with the reference electrode in the position mandated by the MScanFit Multicenter protocol (designated M1 position), and 2) cohort #2 was collected in a repeated measures design using three different positions for the reference electrode (M1, R1 and A3). All participants came for two visits (V1 & V2) separated by an interval of 7-14 days. The two outcome measures in the data are: 1) maximum CMAP in millivots, and 2) motor unit number estimates (MUNE) derived from the MScanFit optimization process. The Excel file contains anonymized individual participant data (IPD).