wherein the imbedded electrode is formed in the shape of a curvilinear winding or in the shape of {HEAD ~ a curvilinear} winding with {TAIL ~ reversals} in direction, 
wherein the imbedded electrode is formed in the shape of a curvilinear winding or in the shape of { HEAD ~ a curvilinear } winding with { TAIL ~ reversals } in direction ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH