1. A stimulus sequencer for generating a sleep therapy stimulus waveform for a patient, the stimulus sequencer comprising: a sequence address generator configured to receive a stimulus start signal from a timer of a closed loop neuromodulator and to provide an address related to a stimulus sequence of the sleep therapy; a sequence memory array coupled to the sequence address generator, the sequence memory array configured to select stimulus sequence information related to the address; a stimulus generator selector coupled to the sequence memory array, the stimulus generator selector configured to receive the stimulus sequence information from the sequence memory array, to receive a stimulus duration signal from the timer of the closed loop neuromodulator, and to provide a generator select signal to a stimulus generator of the closed loop neuromodulator using the stimulus sequence information and the stimulus duration signal, the generator select signal including stimulus type information related to stimulus pulses generated using the closed loop neuromodulator; and wherein the sleep therapy stimulus waveform includes a sequence of one or more stimulus types.