Table 1.

Group average R² values between AP predicted by models of the total baroreflex arc and measured AP

	Linear	Second-Order Uryson	Third-Order Volterra	Third-Order Uryson (Frequency-Domain)	Third-Order Uryson (Laguerre Expansion)
WKY
Training data	0.73 ± 0.03	0.79 ± 0.03*	0.90 ± 0.01*†	0.80 ± 0.03*†	0.80 ± 0.03*†
Testing data	0.64 ± 0.03	0.71 ± 0.03*	0.69 ± 0.03*†	0.71 ± 0.03*	0.71 ± 0.03*
SHR120
Training data	0.53 ± 0.05	0.69 ± 0.04*	0.88 ± 0.01*†	0.72 ± 0.05*†	0.71 ± 0.04*†
Testing data	0.45 ± 0.03	0.64 ± 0.03*	0.64 ± 0.04*	0.65 ± 0.04*	0.66 ± 0.04*
SHR160
Training data	0.63 ± 0.05	0.71 ± 0.05*	0.88 ± 0.03*†	0.72 ± 0.05*	0.72 ± 0.05*
Testing data	0.59 ± 0.04	0.71 ± 0.03*	0.70 ± 0.03*	0.73 ± 0.03*	0.72 ± 0.03*

Values are means ± SE. Third-order Volterra model refers to Eq. 2. AP, arterial pressure; WKY, Wistar-Kyoto rats during Gaussian white noise carotid sinus pressure (CSP) stimulation with mean of 120 mmHg; SHR₁₂₀ and SHR₁₆₀, spontaneously hypertensive rats during the same CSP stimulation with mean of 120 and 160 mmHg, respectively. * and †Statistical significance for paired t-test comparison (after Holm’s correction for three comparisons) with corresponding linear model and second-order Uryson model, respectively.