27. The apparatus of claim 25, wherein the first and second arrays comprise tactile stimulators for presenting the patterns as patterns of cutaneous nerve stimulation.
27. The apparatus of claim 25, wherein the first and second arrays comprise tactile stimulators for presenting the patterns as patterns of cutaneous nerve stimulation. 28. The apparatus of claim 27, wherein the first and second arrays of tactile stimulators are built into the lining of an armband adapted to be worn on the forearm of a user, the tactile stimulator arrays being arranged so as to be positioned in opposing relationship on opposite sides of the forearm to provide coordinated tactile stimulation thereto.