Figure 6.

Demonstration of the cumulative distribution function representing the probability of inducing a response at different SIs. As the slope, represented as relative spread [110], can differ between subjects, the use of the SI related to the rMT can induce differences to the absolute size of the motor map [25]. In the plot, mean relative spread (solid black line) and the minimum (dotted black line) and maximum (dashed black line) found in the study population were used to compare probabilities of inducing a response at 110% rMT (blue dots) and 120% rMT (red dots). At a low relative spread, 110% and 120% rMT produce an MEP at the stimulation target with a probability close to 100%, but with the high relative spread, the probabilities of MEPs at the target at 110% and 120% rMT are 68% and 83%, respectively.