Decoding of the crab cardiac NMT. A: representative recording of contraction amplitude (muscle tension) of the heart muscle (blue curve) in response to a train of 295 random motor neuron spikes (blue dots along the baseline) generated by a Poisson process with a nominal rate of 2 Hz, and the contraction estimated by the decoding method (red curve). B: the decoding model. t = time; t
= time of spike i, j; R = overall contraction response waveform; K = elementary contraction kernel; A = factor scaling the amplitude of K at each spike; H = elementary history kernel; F = static nonlinear function. C: K, H, and F decoded from the dataset in A.