An implant unit configured for implantation into a body of a subject is provided. The implant unit may include an antenna configured to receive a signal, and at least one pair of modulation electrodes configured to be implanted into the body of the subject in the vicinity of at least one nerve to be modulated. The at least one nerve may have a diameter less than about 2 millimeters at a modulation location, and the at least one pair of modulation electrodes may be configured to receive an applied electric signal in response to the signal received by the antenna and generate an electrical field to modulate the at least one nerve from a position spaced apart from the at least one nerve.
