This document discusses, among other things, systems and methods to electrically modulate a patient's pineal gland to control release of melatonin from the pineal gland and regulate melatonin levels of the patient, the electrically modulating the patient's pineal gland including delivering a neuromodulation waveform using at least one electrode to modulate a superior cervical ganglion or ganglia.
MODULATION OF THE SUPERIOR CERVICAL GANGLION FOR THE TREATMENT OF INSOMNIA