Neural Spike data to muscle excitation conversion

[veerendra v]

I am trying to build a neural controller to control the simple opensim double pendulum model(attachment). The controller(either PrescribedController or any Custom Controller by overriding computeControls() method ) needs muscle excitations(values between 0 and 1). Can someone help me how to calculate these muscle excitations(values between 0 -1) from neural spike data(generated by hodgkin huxley model based network)? If possible please suggest some references in this regard.

Thanks in Advance..