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Distributed stimulation with unequal interpulse intervals to compensate for unequal twitches

• Proposal is to change the Rack and Westbury scheme by adjusting the "phase angles" of the different inputs to compensate for the unequal tension contributions of the inputs.

Diagrammatic distributor with unequally spaced contacts to produce optimal stimulation.

Simulation of unequal twitches with optimised intervals. Note that the smaller twitches are closer together than the larger ones. The black broken line is a sinusoid of the stimulation frequency fitted to the simulated tension trace, showing the virtual absence of the fundamental component or tension ripple.

• If this timing can be adjusted dynamically, then changing tension contributions can be accommodated.
• An algorithm is needed to find the optimum phases, or at least improve them, allowing an iterative optimisation.

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