{TAIL ~ The displacement values} may be employed to produce {HEAD ~ a signal} indicative of a respiration phase that can be used in connection with motion artifact reduction techniques 
{ TAIL ~ The displacement values } may be employed to produce { HEAD ~ a signal } indicative of a respiration phase that can be used in connection with motion artifact reduction techniques
TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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