The present invention includes systems, devices, and methods relating to the monitoring of the functional maturation of biological interventions effecting cardiac pacing; the systems, devices, and methods including an implantable electronic pulse generator delivering artificial cardiac pacing; a means for halting the electronic pulse generator delivering artificial cardiac pacing at predetermined data collection intervals; and a sensor for recording and storing data on one or more intrinsic physiological parameters of cardiac pacing during the predetermined data collection intervals.