{TAIL ~ a plurality} of electrodes in an array and adapted to be in {HEAD ~ electrical contact} with the body 
{ TAIL ~ a plurality } of electrodes in an array and adapted to be in { HEAD ~ electrical contact } with the body
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH