1. A method for operating an implanted neural stimulation device having a neural stimulator lead and an antenna lead including an electrode, comprising: implementing a neural stimulation therapy stored in the implanted neural stimulation device including delivering the neural stimulation therapy through the neural stimulator lead and not through the antenna lead, wherein the neural stimulation therapy includes a programmed duty cycle, and the programmed duty cycle includes a stimulation ON portion followed by a stimulation OFF portion; remotely detecting cardiac activity using the antenna lead with the electrode to detect heart rate information during at least one of the stimulation ON portion or during the stimulation OFF portion; controlling the neural stimulation therapy using the detected heart rate information; and using an accelerometer to detect cough or using an accelerometer to monitor laryngeal vibration.