The controller detects {HEAD ~ transitions} between {TAIL ~ inspiration} and expiration via a flow signal to discriminate between the respiratory phases of the patient 
between
The controller detects { HEAD ~ transitions } between { TAIL ~ inspiration } and expiration via a flow signal to discriminate between the respiratory phases of the patient
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH