( ( ( Amaral 's ) hypothesis ) ( ( is ( that ( ( the amygdala ) ( may ( be ( ( a ( critical player ) ) ( in ( ( the development ) ( of ( the ( neurodevelopmental ( disorder autism ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Amaral) (POS 's)) (NNS hypothesis)) (VP (VBZ is) (SBAR (IN that) (S (NP (DT the) (NN amygdala)) (VP (MD may) (VP (VB be) (NP (NP (DT a) (JJ critical) (NN player)) (PP (IN in) (NP (NP (DT the) (NN development)) (PP (IN of) (NP (DT the) (JJ neurodevelopmental) (NN disorder) (NN autism))))))))))) (. .)))
Amaral's hypothesis is that the amygdala may be a critical player in the development of the neurodevelopmental disorder autism.
(ROOT (S (NP (JJ Neurodevelopmental) (NNS disorders)) (VP (VBP happen) (SBAR (WHADVP (WRB when)) (S (NP (NP (NN development)) (PP (IN of) (NP (JJ nervous) (NN system)))) (VP (VBZ is) (ADJP (JJ disturbed)))))) (. .)))