In addition, {HEAD ~ high frequency power} has {TAIL ~ a more specific effect} on disabling the central nervous system 
has
In addition , { HEAD ~ high frequency power } has { TAIL ~ a more specific effect } on disabling the central nervous system
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH