A neuromodulation system comprising: a neuromodulation device comprising: a neuromodulation lead comprising: a lead body with a right portion, a left portion, and an intermediate portion; a plurality of electrodes comprising a left set of electrodes disposed on the left portion of the lead body and a right set of electrodes disposed on the right portion of the lead body, at least one of the plurality of electrodes being a stimulating electrode configured to deliver a stimulation signal to a target site, the lead body biased towards a substantially omega shape when the neuromodulation lead is fully deployed and/or the intermediate portion of the lead body biased towards an inferior position relative to the left and right electrode sets when the neuromodulation lead is fully deployed; an antenna operably coupled to the neuromodulation lead configured to produce an induced current in response to being disposed in an electromagnetic field an electronics package comprising electrical components to control the application of a stimulation signal via the stimulating electrode; an external controller comprising a control unit; a sensor configured to be implantable adjacent to an anterior lingual muscle and configured to record physiological data; and a computing device comprising: a non-transitory memory storing instructions; and a processor to access the non-transitory memory and execute the instructions to at least: monitor the physiological data recorded by the sensor; identify a trigger within the physiological data, wherein the trigger is identified as a biomarker for a condition related to sleep; and apply a rule-based classification to the trigger to determine whether one or more parameters of the stimulation signal should be altered based on the biomarker, the stimulating electrode configured to deliver the stimulation signal to the target site during a period and to alter the one or more parameters of the stimulation signal in response to a signal from the computing device, characterised in that said antenna comprises an upper and a lower coil electrically connected to each other in parallel, whereby said external controller comprises a power mat that supports one or more power transmission coils that are excitable to produce an electromagnetic field for inducing electrical current in the antenna to power the neuromodulation lead. a lead body with a right portion, a left portion, and an intermediate portion; a plurality of electrodes comprising a left set of electrodes disposed on the left portion of the lead body and a right set of electrodes disposed on the right portion of the lead body, at least one of the plurality of electrodes being a stimulating electrode configured to deliver a stimulation signal to a target site, the lead body biased towards a substantially omega shape when the neuromodulation lead is fully deployed and/or the intermediate portion of the lead body biased towards an inferior position relative to the left and right electrode sets when the neuromodulation lead is fully deployed; an antenna operably coupled to the neuromodulation lead configured to produce an induced current in response to being disposed in an electromagnetic field an electronics package comprising electrical components to control the application of a stimulation signal via the stimulating electrode; an external controller comprising a control unit; a sensor configured to be implantable adjacent to an anterior lingual muscle and configured to record physiological data; and a computing device comprising: a non-transitory memory storing instructions; and a processor to access the non-transitory memory and execute the instructions to at least: monitor the physiological data recorded by the sensor; identify a trigger within the physiological data, wherein the trigger is identified as a biomarker for a condition related to sleep; and apply a rule-based classification to the trigger to determine whether one or more parameters of the stimulation signal should be altered based on the biomarker, the stimulating electrode configured to deliver the stimulation signal to the target site during a period and to alter the one or more parameters of the stimulation signal in response to a signal from the computing device, characterised in that said antenna comprises an upper and a lower coil electrically connected to each other in parallel, whereby said external controller comprises a power mat that supports one or more power transmission coils that are excitable to produce an electromagnetic field for inducing electrical current in the antenna to power the neuromodulation lead.