Estimation of the Motor Threshold for Near-Rectangular Stimuli Using the Hodgkin–Huxley Model

Figure 4

Results of human experiments [29] and HH modeling results of (a) the threshold intensity for a 60 μs unidirectional pulse, according to the #1RMT protocol and (b) the minimum threshold pulse width (ThPW), according to the #2RMT protocol. The amplitude of each estimated pulse indicates the minimum intensity required to stimulate the neuron and to generate an action potential in the HH model (continuous lines). The amplitude of each tested pulse indicates the minimum intensity required to elicit minimal MEPs in the experimental trials (dashed lines).

(a)

(b)