During a surgical procedure, {HEAD ~ neutral electrode} 10 is attached to {TAIL ~ the patient} 15 in the usual manner  
During a surgical procedure , { HEAD ~ neutral electrode } 10 is attached to { TAIL ~ the patient } 15 in the usual manner
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH