Analysis of the synchronization performance of wireless functional electronic stimulation central pattern generator

In this study, we present a novel wireless ergodic sequential logic central pattern generator (CPG) for functional electronic stimulation (FES), where the CPG is consisting of a network of oscillators. We have analyzed effects of communication noise to the synchronization of the CPG quantitatively. Furthermore, we have implemented the CPG by wirelessly coupled multiple field programmable gate arrays. It has been shown that the presented CPG has been capable of assisting the human in walking. In addition, we show that the presented CPG is superior to typical conventional CPGs. The results of this study will be useful to the development of an FES system, which is an implantable microdevice and does not have wires that interfere with leg movements.