( Researchers ( ( know ( that ( ( ( an excess ) ( of ( a neurotransmitter ) ) ) ( ( called ( glutamate clogs ) ) ( ( the synapse ) ( of ( ( the ( nerve cell ) ) ( preventing ( transmission ( of ( neural impulses ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Researchers)) (VP (VBP know) (SBAR (IN that) (S (NP (NP (DT an) (NN excess)) (PP (IN of) (NP (DT a) (NN neurotransmitter)))) (VP (VBD called) (NP (JJ glutamate) (NNS clogs)) (NP (NP (DT the) (NN synapse)) (PP (IN of) (NP (NP (DT the) (NN nerve) (NN cell)) (VP (VBG preventing) (NP (NP (NN transmission)) (PP (IN of) (NP (JJ neural) (NNS impulses)))))))))))) (. .)))
Researchers know that an excess of a neurotransmitter called glutamate clogs the synapse of the nerve cell preventing transmission of neural impulses.
(ROOT (S (PP (IN Like) (S (NP (DT a) (NN runner)) (VP (VBG passing) (NP (DT a) (NN baton))))) (, ,) (NP (NP (DT the) (NN transmission)) (PP (IN of) (NP (NP (NN nerve) (NNS impulses)) (PP (IN between) (NP (NNS neurons)))))) (VP (VBZ depends) (PP (IN on) (NP (NNS neurotransmitters)))) (. .)))