highly significantP < 10 −15
Stepwise analysis of the multivariate model resulted in a highly significant ( F 11,1571 = 16.86, P < 10 −15 ) equation with eight additive directional terms (LINE, R.CALL, R.VOL, R.CHIRP, R.V.PULSE/CHIRP, R.V.CHIRP.W, R.IPULSE.W), one stabilizing term (PULSE, labeled as S.PULSE in the equation) and three interactions (LINExR.VOL, LINExR.CHIRP, LINExR.IPULSE.W).