Abstract: Systems, devices, and techniques for adjusting electrical stimulation based on sensed ECAP signals. For example, processing circuitry is configured to control delivery of a first train of electrical stimulation pulses at a first frequency to a first target tissue and control delivery of a second train of electrical stimulation pulses at a second frequency to a second target tissue different from the first target tissue. The processing circuitry can also receive an ECAP signal elicited by a pulse of the second train of electrical stimulation pulses, adjust, based on the ECAP signal, a first value of a parameter that at least partially defines the first tram of electrical stimulation pulses to a second value, and, responsive to adjusting the first value of the parameter to the second value, control delivery of subsequent pulses of the first tram of electrical stimulation pulses according to the second value of the parameter.

Abstract: Examples for controlling electrical stimulation therapy are described. One example includes delivering a pulse train at a frequency to a patient, the pulse train comprising a plurality of first pulses at least partially interleaved with a plurality of second pulses, wherein the plurality of first pulses are configured to facilitate sensing elicited electrical signals, each pulse of the plurality of first pulses having an active first phase and active second phase. Each pulse of the plurality of second pulses may include an active first phase and a passive second phase. Additionally, or alternatively, the plurality of second pulses may alternate between a cathodic active first phase and an anodic active first phase according to a ratio. At least one pulse of the plurality' of second pulses may have an interphase interval that is longer than an interphase interval of at least one pulse of the plurality of first pulses.