Adjustment of Stimulation in a Stimulator Using Detected Evoked Compound Action Potentials

A medical device, comprising:

• a plurality of electrodes each configured to be electrically coupled in contact with a patient's tissue;
• and
• control circuitry configured to
• control stimulation circuitry to issue a stimulation waveform pursuant to an stimulation program, wherein the stimulation program comprises a first electrode configuration,
• wherein the first electrode configuration defines which of the plurality of electrodes should be active, whether each active electrode comprises an anode electrode or a cathode electrode, and a percentage of a first total anodic current for each active anode electrode and a percentage of a first cathodic current for each active cathode electrode,
• wherein the first electrode configuration is associated with a center point of stimulation (CPS) in a patient's tissue,
• determine a neural response to the stimulation waveform at at least one electrode of the plurality of electrodes and to determine at least one feature of the neural response, and
• based on the at least one feature, adjust the stimulation program so that it comprises a second electrode configuration different from the first electrode configuration, wherein the second electrode configuration is associated with a CPS in the patient's tissue that equals the CPS associated with the first electrode configuration.