Fig. 6.

Relationship between mean short interval-intracortical inhibition (SICI) between interstimulus intervals 1–7 ms and the motor-evoked potential (MEP) duration, expressed as a percentage of the compound muscle action potential (CMAP) duration, at rest (A) and with facilitation (B). Each data point represents the averaged SICI and MEP duration [single pulse at 150% resting motor threshold (RMT)] for an individual subject (n = 30). The dashed lines represent the optimal linear and curvilinear models (logarithmic function).