An apparatus, comprising: a stimulator assembly including a stimulus generator , a power source , and a housing , the stimulus generator being non-removably disposed within the housing , the power source being disposed within the housing , the stimulus generator being electrically coupled to the power source ; and an electrode assembly removably coupleable to the stimulator assembly , the electrode assembly including a plurality of electrodes and a connector assembly , the connector assembly including at least a first snap-fit connector and a second snap-fit connector coupled to a first surface of the electrode assembly , the first snap-fit connector configured to removably electrically and mechanically couple the stimulator assembly to the electrode assembly , the second snap-fit connector configured to removably electrically and mechanically couple the stimulator assembly to the electrode assembly , the plurality of electrodes being disposed on a second surface of the electrode assembly different from the first surface, the plurality of electrodes configured to contact a bodily tissue and to convey an electric current produced by the stimulus generator to at least a portion of the bodily tissue, wherein the stimulator assembly includes a connector assembly configured to be removably coupled to the connector assembly of the electrode assembly , the connector assembly of the stimulator assembly including at least a first connector and a second connector configured to receive at least a portion of the first snap-fit connector and the second snap-fit connector, respectively, of the electrode assembly . a stimulator assembly including a stimulus generator , a power source , and a housing , the stimulus generator being non-removably disposed within the housing , the power source being disposed within the housing , the stimulus generator being electrically coupled to the power source ; and an electrode assembly removably coupleable to the stimulator assembly , the electrode assembly including a plurality of electrodes and a connector assembly , the connector assembly including at least a first snap-fit connector and a second snap-fit connector coupled to a first surface of the electrode assembly , the first snap-fit connector configured to removably electrically and mechanically couple the stimulator assembly to the electrode assembly , the second snap-fit connector configured to removably electrically and mechanically couple the stimulator assembly to the electrode assembly , the plurality of electrodes being disposed on a second surface of the electrode assembly different from the first surface, the plurality of electrodes configured to contact a bodily tissue and to convey an electric current produced by the stimulus generator to at least a portion of the bodily tissue, wherein the stimulator assembly includes a connector assembly configured to be removably coupled to the connector assembly of the electrode assembly , the connector assembly of the stimulator assembly including at least a first connector and a second connector configured to receive at least a portion of the first snap-fit connector and the second snap-fit connector, respectively, of the electrode assembly . <EOS>