( ( This movement ) ( ( hyperpolarises ( the ( hair ( cell membrane ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN movement)) (VP (VBZ hyperpolarises) (NP (DT the) (NN hair) (NN cell) (NN membrane))) (. .)))
This movement hyperpolarises the hair cell membrane.
(ROOT (NP (NP (NP (DT The) (NN hair) (NNS cells) (NN sense)) (PRN (-LRB- -LRB-) (PRP s) (-RRB- -RRB-))) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (ADJP (JJ liquid) (PP (IN in) (NP (NN ear)))) (NNS canals)))) (. .)))