Use of compound action potentials to automatically adjust neurostimulation therapy in response to postural changes of patient

A neurostimulation system, comprising:

• a plurality of electrical terminals respectively configured for being electrically coupled to a plurality of electrodes implanted within a neural tissue;
• stimulation output circuitry coupled to the plurality of electrical terminals;
• monitoring circuitry coupled to the plurality of electrical terminals;
• memory configured for storing a threshold value;
• and
• controller/processor circuitry configured for:
• prompting the stimulation output circuitry to deliver electrical stimulation energy to a first set of the electrodes in accordance with a stimulation parameter capable of treating a patient and evoking at least one compound action potential (CAP) in a population of neurons in the neural tissue;
• prompting the monitoring circuitry to measure a magnitude of the at least one evoked CAP (eCAP) at a second set of the electrodes;
• comparing a function of the at least one measured magnitude of the at least one eCAP to the threshold value;
• and
• adjusting the stimulation parameter based on the comparison.