Table 4.

[DA]_ECvalues (mean ± SEM) under different conditions

Space	DAT distribution	[DA]EC ± Δ [DA]EC (nM)
		Tonic	Phasic
Well-mixed DA a		8.16 ± 0.92	8.29 ± 1.41
Ellipsoid geometry		8.21 ± 0.85	8.33 ± 1.44
Complex space
Case 1	Uniform b	7.54 ± 0.86	6.93 ± 1.92
Case 2	Nonuniform c	16.59 ± 1.26	14.19 ± 2.44
Case 3	Sharp bimodal d	33.12 ± 3.13	29.65 ± 4.49
Case 4	Sharp bimodal d	32.49 ± 2.86	32.89 ± 3.68

^aSpace/structure-independent. All other cases are in realistic DA neuronal geometry.

^bDAT densities for uniform and nonuniform (bimodal) distributions; see Table 2.

^cCase 2 (ρ_h = 6339/μm² and ρ_l = 50/μm²).

^dCases 3 and 4 (ρ_h = 30,000/μm² and ρ_l = 50/μm²; see Figs. 2 and 11).