( ( ( Many nuclei ) ( with ( ( distinct ( chemical signatures ) ) ( in ( the ( thalamus ( , ( ( midbrain and ) pons ) ) ) ) ) ) ) ) ( ( must ( function ( for ( a ( ( subject ( to ( be ( in ( ( a ( sufficient state ) ) ( of brain ) ) ) ) ) ) ( arousal ( to ( ( experience anything ) ( at all ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Many) (NNS nuclei)) (PP (IN with) (NP (NP (JJ distinct) (NN chemical) (NNS signatures)) (PP (IN in) (NP (DT the) (NNS thalamus) (, ,) (NNS midbrain) (CC and) (NNS pons)))))) (VP (MD must) (VP (VB function) (PP (IN for) (NP (DT a) (ADJP (JJ subject) (S (VP (TO to) (VP (VB be) (PP (IN in) (NP (NP (DT a) (JJ sufficient) (NN state)) (PP (IN of) (NP (NN brain))))))))) (NN arousal) (S (VP (TO to) (VP (VB experience) (NP (NN anything)) (ADVP (IN at) (DT all))))))))) (. .)))
Many nuclei with distinct chemical signatures in the thalamus, midbrain and pons must function for a subject to be in a sufficient state of brain arousal to experience anything at all.
(ROOT (S (NP (DT The) (NNS thalamus)) (VP (VBZ helps) (S (VP (TO to) (VP (VP (VB regulate) (NP (NN consciousness))) (, ,) (VP (VB arousal)) (, ,) (CC and) (VP (VB sleep) (NP (NNS states))))))) (. .)))