at least one pair of electrodes, the ground member of said at least one pair of electrodes being in electrical communication with {HEAD ~ electrical output} flowing through {TAIL ~ said analog switch} 
flowing through
at least one pair of electrodes , the ground member of said at least one pair of electrodes being in electrical communication with { HEAD ~ electrical output } flowing through { TAIL ~ said analog switch }
OTH 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 HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL