The Test-Retest Reliability of Non-Navigated Transcranial Magnetic Stimulation (TMS) Measures of Corticospinal Pathway Excitability in a Neurologically Intact Adult Population.

Acceptable reliability was set at a lower 95% CI of 0.70 or above for the ICC.

In healthy adults (n = 51) none of the MEP characteristics were reliable.

The lower end of the CI was below acceptable reliability (ICC < 0.7) for all MEP characteristics.

The LOA had small mean differences between sessions with wide 95% LOA demonstrating measurement variability.