Table 1. Mean (n=5 baboons), standard deviations of the model parameters identified in the seven ROIs and regional autoradiographic densities obtained in human braina.

Parameters	Parameter estimates±standard deviations
	Frontal Ctx	Parietal Ctx	Thalamus	Pons	Caudate	Putamen	Cerebellum
B′max (pmol/mL)	199±26	141±27	182±24	145±38	194±26	194±30	66±13
k1 (min−1)	0.367±0.071	0.341±0.050	0.404±0.071	0.402±0.097	0.424±0.077	0.487±0.110	0.470±0.102
k2 (min−1)	0.495±0.051	0.474±0.037	0.448±0.032	0.522±0.075	0.513±0.052	0.546±0.068	0.588±0.050
kon/VR mL/(pmol min)	0.006±0.0017	0.008±0.0027	0.005±0.0013	0.005±0.0010	0.006±0.0019	0.005±0.0015	0.006±0.0019
koff (min−1)	0.038±0.012	0.045±0.011	0.032±0.008	0.025±0.010	0.036±0.013	0.032±0.011	0.041±0.008
k5 (min−1)	0.011±0.009	0.011±0.008	0.010±0.010	0.023±0.024	0.016±0.013	0.008±0.007	0.011±0.009
k6 (min−1)	0.026±0.025	0.034±0.043	0.044±0.057	0.057±0.060	0.060±0.058	0.033±0.030	0.024±0.022
KdVR (nmol/L)	6.1±1.2	5.7±1.1	6.8±1.1	6.2±2.8	6.5±1.6	6.4±1.4	6.9±1.5
In vitro Bmax (humans) (pmol/mL)a	NA	NA	NA	265	246	235	99

NA, not available.

^aFrom Saura et al (1996).