New lead designs particularly useful in a Spinal Cord Stimulation (SCS) system are disclosed which are useful to sensing neural responses such as Evoked Compound Action Potentials (ECAPs). One or more sensing electrodes on the lead are spaced at significantly larger distances away from the stimulating electrodes, such as at distances in a range of 20 mm to less than 30 mm. Positioning the sensing electrodes at such distances allows for sensing of ECAPs at a sufficient distance away from the stimulating electrodes that ECAP measurements at the sensing electrodes will be less affected by stimulation artifacts that accompany the stimulation. The sensing electrodes may be dedicated to sensing, or may also have the ability to function as stimulating electrodes.
