Time delay between activation and muscle force

[Brandon Brown]

Hello everyone.

I had a couple of quick questions about the time delay between muscle activation and the onset of muscle force. In OpenSim, is the time delay equal to the time activation constant given by the Thelen muscle model? That's my first question.

My next question is whether there is a time delay built in to static optimization such that there is a delay between the activation levels I get through static optimization and the forces I get.

Thanks,

Brandon

[jimmy d]

There is no excitation-activation dynamics in static optimization (ie no delay)