Patent ID: 7835804

Claim:
A system for measuring an evoked compound action potential (eCAP) artifact, the system comprising: an electrical-equivalent model, wherein in the model includes an ideal current source having a positive and negative side; a stimulation electrode coupled to the positive side of the current source through a first coupling capacitor; a large electrode, comprising a system ground, connected to the negative side of the current source without being routed through a coupling capacitor; an ideal amplifier having a positive side and a negative side; a recording electrode coupled to the positive side of the ideal amplifier through a second coupling capacitor; and a recording return electrode coupled to the negative side of the amplifier through a third coupling capacitor; and means for recording a voltage artifact at the recording electrode; wherein the electrical-equivalent model is configured to emit a biphasic current pulse from the current source and apply the biphasic current pulse to the stimulation electrode, and wherein the current source is left as an open circuit after the end of the biphasic current pulse, and wherein the means for recording measures the eCAP artifact appearing at the recording electrode after a response time.