Model EJPs compared with data. A, The EJCs in response to 4 Hz and 8 Hz spike trains as predicted byK1, K2, and the nonlinearity of Figure 4A were fed into a simple RC model of the gm8 muscle based on measured passive properties of the muscle fiber. The resulting predicted EJPs are plotted.B, EJPs produced by the same model as inA but with added noise. C, Measured EJPs from the gm8 muscle in response to 4 Hz and 8 Hz trains.