A shelter for the protection of for the protection of persons, animals, equipment, materials, property, and similar things of value from potentially damaging environmental conditions is disclosed. Typically, the target anatomy includes one or more dorsal root ganglia, dorsal roots, dorsal root entry zones, or portions thereof. The first multiplier electrically coupled to the phase converter for performing a first operation by multiplying the delayed test wave form with the output wave form. The first pattern has a first maximum acceleration associated with the second portion, and the second pattern has a second maximum acceleration associated with the second portion.