Monitoring the Electrical Behaviour of the Electrode-Tissue Interface by way of Reverse Telemetry in a 100 Channel Neurostimul
نویسندگان
چکیده
Knowledge of the state of the electrode-tissue interface in Functional Electrical Stimulation (FES) is an important factor in evaluating the chronic viability of such applications. Changes in the electrical impedance of a given electrode-tissue interface can be attributed to several factors including mechanical movement, electrode dissolution, changes in tissue morphology, and device degradation or failure. It is known from other applications that stimulation thresholds change over time [1], and while patient adaptation appears to play an important role in these changes, the influence the state of the electrode-tissue interface has on stimulation thresholds is not fully understood. As more sophisticated neuroprostheses are developed and the quantities of stimulating sites increase, the need arises for means of monitoring the electrical characteristics of the electrode-tissue interface through non-invasive means.
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