A method and system for providing therapy to a patient via delivery of a broad spectrum of tunable electrical noise signals is provided. The method includes delivering a broad spectrum of tunable electrical noise signals to target neural tissue, non-neural tissue, or a combination thereof in the patient via an electrode, and using feedback from the patient to tune the broad spectrum of electrical noise signals to optimize the therapy provided to the patient. The system includes an electrode, a noise generator coupled to the electrode, and a controller. The controller instructs the noise generator to deliver a broad spectrum of tunable electrical noise signals to target neural tissue, non-neural tissue, or a combination thereof via the electrode, and the controller is configured to tune the broad spectrum of electrical noise signals to optimize the therapy provided to the patient based on feedback received from the patient.