{TAIL ~ The system} 1, wherein said electrostimulation unit generates {HEAD ~ different signals} of varying duty cycles, or no signal at all, for portions of the treatment 
{ TAIL ~ The system } 1 , wherein said electrostimulation unit generates { HEAD ~ different signals } of varying duty cycles , or no signal at all , for portions of the treatment
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH