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