Methods and Apparatus for Improved Measurement of Compound Action Potentials

Abstract

Disclosed is a device for recording evoked neural responses. The device comprises: a plurality of electrodes including one or more stimulus electrodes, a first sense electrode, and a second sense electrode; a stimulus source for providing a stimulus to be delivered via the one or more stimulus electrodes to a neural pathway in order to evoke a compound action potential on the neural pathway; measurement circuitry for processing a signal sensed at the first sense electrode and second sense electrode, the sensed signal comprising the evoked compound action potential; and impedance compensation means configured to compensate for an impedance difference, the impedance difference being a difference between an impedance associated with the first sense electrode and an impedance associated with the second sense electrode.

Dependencies are inferred from the claim text.