so successful at lodging itself in the brain 
(ROOT (ADJP (RB so) (JJ successful) (PP (IN at) (S (VP (VBG lodging) (NP (PRP itself)) (PP (IN in) (NP (DT the) (NN brain))))))))
(ROOT (ADJP (RB ) (JJ ) (PP (IN ) (S (VP (VBG ) (NP (PRP )) (PP (IN ) (NP (DT ) (NN ))))))))