A system and method of packet zone hysteresis for a mobile station is presented. Wire springs are produced with various wire diameters and various outer diameters; foam cases are provided with various characteristics; the composed springs are formed with a desired rigidity by means of a suitable combination of wire springs and foam casings. A helper spring of the electrical bushing abuts an outer surface of the contact spring to apply a force to the contact spring. This invention also relates to other combinations with the ARIs of this invention, including combinations with adendsine agonists; NHE-1 inhibitors; glycogen phosphorylase inhibitors; selective serotonin reuptake inhibitors; GABA agonists; antihypertensive agents; 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors; phosphodiesterase-5 inhibitors; and to glucose lowering agents. The pouch is configured to pass through the opening and is contained within the interior cavity during the play by the animal. Conductive patterns are secured to the wire plate, and a light emitting diode element is secured to the base at an exposed mounting area.