The output from the accelerometers may be integrated to quantify {HEAD ~ movement} of {TAIL ~ the array} 
of
The output from the accelerometers may be integrated to quantify { HEAD ~ movement } of { TAIL ~ the array }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL