( ( Working ( with ( ( the cochlea ) ( surgically ( removed ( from ( newborn rats ) ) ) ) ) ) ) ( , ( Glowatzki ( ( ( ( ( ( ( placed electrodes ) directly ) ( on ( the ( hair cells ) ) ) ) ( to ( record ( electrical activity ) ) ) ) and ) ( found ( that ( ( ( the neurons ) ( from ( the brain ) ) ) ( release ( ( ( the ( neurotransmitter acetylcholine ) ) , ) ( which ( ( inhibits or ) ( ( turns off ) ( ( ( the ( hair ( cell 's ) ) ) signal ) ( to ( the brain ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (VBG Working) (PP (IN with) (NP (NP (DT the) (NN cochlea)) (VP (ADVP (RB surgically)) (VBN removed) (PP (IN from) (NP (JJ newborn) (NNS rats)))))))) (, ,) (NP (NNP Glowatzki)) (VP (VP (VBD placed) (NP (NNS electrodes)) (ADVP (RB directly)) (PP (IN on) (NP (DT the) (NN hair) (NNS cells))) (S (VP (TO to) (VP (VB record) (NP (JJ electrical) (NN activity)))))) (CC and) (VP (VBD found) (SBAR (IN that) (S (NP (NP (DT the) (NNS neurons)) (PP (IN from) (NP (DT the) (NN brain)))) (VP (VBP release) (NP (NP (DT the) (NN neurotransmitter) (NN acetylcholine)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VP (VBZ inhibits)) (CC or) (VP (VBZ turns) (PRT (RP off)) (NP (NP (NP (DT the) (NN hair) (NN cell) (POS 's)) (NN signal)) (PP (TO to) (NP (DT the) (NN brain)))))))))))))) (. .)))
Working with the cochlea surgically removed from newborn rats, Glowatzki placed electrodes directly on the hair cells to record electrical activity and found that the neurons from the brain release the neurotransmitter acetylcholine, which inhibits or turns off the hair cell's signal to the brain.
(ROOT (S (NP (NP (JJ Hair) (NNS cells)) (PP (IN in) (NP (DT the) (NN cochlea) (NN release)))) (VP (VBZ neurotransmitters) (SBAR (WHADVP (WRB when)) (S (NP (PRP they)) (VP (VB bend))))) (. .)))