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