( ( The ( Noraxon ( signal ( conditioning system ) ) ) ) ( ( ( uses ( an ( electronic ( feedback technique ) ) ) ) ( to ( ( cancel out ) ( ( ( ( very low ) ( frequency changes ) ) ( -LRB- ( ( dc ( to ( fractions ( of ( a Hz ) ) ) ) ) -RRB- ) ) ) ( in ( the ( acquired ( physiological signal ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Noraxon) (NN signal) (NN conditioning) (NN system)) (VP (VBZ uses) (NP (DT an) (JJ electronic) (NN feedback) (NN technique)) (S (VP (TO to) (VP (VB cancel) (PRT (RP out)) (NP (NP (ADJP (RB very) (JJ low)) (NN frequency) (NNS changes)) (PRN (-LRB- -LRB-) (NP (NP (NN dc)) (PP (TO to) (NP (NP (NNS fractions)) (PP (IN of) (NP (DT a) (NNP Hz)))))) (-RRB- -RRB-)) (PP (IN in) (NP (DT the) (VBN acquired) (NN physiological) (NN signal)))))))) (. .)))
The Noraxon signal conditioning system uses an electronic feedback technique to cancel out very low frequency changes (dc to fractions of a Hz) in the acquired physiological signal.
(ROOT (S (NP (JJ Positive) (NN feedback)) (VP (VP (VBZ intensifies) (NP (NP (DT a) (NN change)) (PP (IN in) (NP (NP (DT the) (NN body) (POS 's)) (JJ physiological) (NN condition))))) (CONJP (RB rather) (IN than)) (VP (VBG reversing) (NP (PRP it)))) (. .)))