{HEAD ~ The control system} 34 is coupled to a pacing, or {TAIL ~ stimulation}, channel 24 and a sensing channel 26 
{ HEAD ~ The control system } 34 is coupled to a pacing , or { TAIL ~ stimulation } , channel 24 and a sensing channel 26
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH