to reflect its dynamics and {HEAD ~ a lookup table} for {TAIL ~ its impact} on the BIS levels at the steady state 
for
to reflect its dynamics and { HEAD ~ a lookup table } for { TAIL ~ its impact } on the BIS levels at the steady state
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH