The output signal of the comparator is used as an alarm signal to actuate an alarm or a protective means for {TAIL ~ a patient} in contact with {HEAD ~ the neutral electrode} 
The output signal of the comparator is used as an alarm signal to actuate an alarm or a protective means for { TAIL ~ a patient } in contact with { HEAD ~ the neutral electrode }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD