The scaled stimulation is then used to predict {HEAD ~ the impact} on {TAIL ~ the BIS measurements} 
The scaled stimulation is then used to predict { HEAD ~ the impact } on { TAIL ~ the BIS measurements }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL