( ( Most experts ) ( ( agree ( that ( it ( affects ( ( ( the midbrain ) , ) ( ( the part ) ( of ( ( the brain ) ( that ( controls impulses ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJS Most) (NNS experts)) (VP (VBP agree) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ affects) (NP (NP (DT the) (NN midbrain)) (, ,) (NP (NP (DT the) (NN part)) (PP (IN of) (NP (NP (DT the) (NN brain)) (SBAR (WHNP (WDT that)) (S (VP (VBZ controls) (NP (NNS impulses))))))))))))) (. .)))
Most experts agree that it affects the midbrain, the part of the brain that controls impulses.
(ROOT (S (ADVP (RB Not) (RB surprisingly)) (, ,) (NP (JJ controlling) (NN flight)) (VP (VBZ is) (NP (NP (DT the) (NN function)) (PP (IN of) (NP (NP (DT the) (ADJP (RBS most) (JJ developed)) (NN part)) (PP (IN of) (NP (NP (DT a) (NN bird) (POS 's)) (NN brain))))))) (. .)))