Methods and systems for electrical stimulation can include obtaining a biosignal of the patient； altering at least one stimulation parameter of an electrical stimulation system in response to the biosignal； and delivering an electrical stimulation current to one or more selected electrodes of the electrical stimulation system using the at least one stimulation parameter. In some embodiments, a power spectrum is determined from the biosignal. In some embodiments, the biosignal is at least two different biosignals measured at the same or different locations on the patient and a coherence, correlation, or association between the two biosignal is determined.
