Table 3. Fitted experimental data of pairs of motoneuron (MN) properties and subsequent normalized final size-related relationships.

For information, the $r^2$, p-value, and the equation $A=k_a\bullet B^a$ are reported for each fitted global dataset. The normalized MN-size dependent relationships $A=k_c\bullet S_{MN}^c$ are mathematically derived from the transformation of the global datasets and from the power trendline fitting of the final datasets (N data points) as described in ‘Methods’. The minimum and maximum values of $k_a,k_c,a$, and $c$ defining the 95% confidence interval of the regression are also reported in parenthesis for each global and final dataset. The $r^2$ values reported in this table are consistent with the $r^2$ values obtained when directly fitting the normalized experimental datasets with power regressions (see Appendix 1—table 1).

MN property	${\displaystyle \mathit{A}={\mathit{k}}_{\mathit{a}}\cdot {\mathit{B}}^{\mathit{a}}}$(normalized global datasets)						${\displaystyle \mathit{A}={\mathit{k}}_{\mathit{c}}\cdot {\mathit{S}}_{\mathit{M}\mathit{N}}^{\mathit{c}}}$(final MN-size dependent datasets)
${\displaystyle \mathit{A}}$	Relationship	$k_a$	${\displaystyle a}$	${\displaystyle r^2}$	p-value	Reference studies	${\displaystyle k_c}$	${\displaystyle c}$	${\displaystyle r^2}$	p-value	${\displaystyle N}$ points
${\displaystyle \mathit{A}\mathit{C}\mathit{V}}$	$ACV=k_a\bullet S_{MN}^a$	4.0 (2.5; 6.4)	0.7 (0.6; 0.8)	0.58	< 10-5	Cullheim, 1978; Kernell and Zwaagstra, 1981; Burke et al., 1982	4.0 (2.5; 6.4)	0.7 (0.6; 0.8)	0.58	< 10-5	109
${\displaystyle \mathit{A}\mathit{H}\mathit{P}}$	$AHP=k_a\bullet S_{MN}^a$	6.1 · 103 (1.2 · 103; 3.2 · 104)	−1.2 (−1.6; −0.8)	0.34	< 10-5	Zwaagstra and Kernell, 1980	2.5 · 104 (1.2 · 104; 5.0 · 104)	−1.5 (−1.7; −1.3)	0.41	< 10-5	492
	$AHP=k_a\bullet {ACV}^a$	1.5 · 104 (7.4 · 103; 2.9 · 104)	−1.4 (−1.5; −1.2)	0.41	< 10-5	Eccles et al., 1958a; Zwaagstra and Kernell, 1980; Gustafsson and Pinter, 1984b; Foehring et al., 1987
${\displaystyle \mathit{R}}$	$R=k_a\bullet S_{MN}^a$	1.5 · 105 (2.7 · 104; 7.9 · 105)	−2.1 (−2.5; −1.7)	0.61	< 10-5	Kernell and Zwaagstra, 1981; Burke et al., 1982	9.6 · 105 (4.1 · 105; 2.3 · 106)	−2.4 (−2.6; −2.2)	0.37	< 10-5	745
	$R=k_a\bullet AC{V}^a$	6.3 · 105 (1.9 · 105; 2.1 · 106)	−2.3 (−2.6; −2.0)	0.38	< 10-5	Kernell, 1966; Burke, 1968; Barrett and Crill, 1974; Kernell and Zwaagstra, 1981; Fleshman et al., 1981; Gustafsson and Pinter, 1984b; Sasaki, 1991
	$R=k_a\bullet AH{P}^a$	6.2 · 10−1 (4.1 · 10−1; 9.2 · 10−1)	1.1 (0.9; 1.2)	0.65	< 10-5	Gustafsson, 1979; Gustafsson and Pinter, 1984b; Foehring et al., 1987; Pinter and Vanden Noven, 1989; Sasaki, 1991
${\displaystyle {\mathit{I}}_{\mathit{t}\mathit{h}}}$	$I_{th}=k_a\bullet R^a$	1.1 · 103 (0.8 · 103; 1.3 · 103)	−1.0 (−1.1; −0.9)	0.37	< 10-5	Kernell, 1966; Fleshman et al., 1981; Gustafsson and Pinter, 1984a; Zengel et al., 1985; Munson et al., 1986; Foehring et al., 1987; Krawitz et al., 2001	9.0 · 10−4 (4.7 · 10−4; 1.7 · 10−3)	2.5 (2.4; 2.7)	0.37	< 10-5	722
	$I_{th}=k_a\bullet AC{V}^a$	3.2 · 10−6 (1.3 · 10−7; 8.2 · 10−5)	3.7 (3.0; 4.4)	0.37	< 10-5	Kernell and Monster, 1981; Gustafsson and Pinter, 1984a
	$I_{th}=k_a\bullet AH{P}^a$	2.5 · 104 (1.3 · 104; 4.8· 104)	−1.7 (−1.9; −1.6)	0.60	< 10-5	Gustafsson and Pinter, 1984a
${\displaystyle \mathit{C}}$	$C=k_a\bullet R^a$	2.4 · 102 (2.0 · 102; 3.9 · 102)	−0.4 (−0.4; −0.3)	0.57	< 10-5	Gustafsson and Pinter, 1984b	1.2 (0.7; 2.0)	1.0 (0.9; 1.2)	0.28	< 10-5	444
	$C=k_a\bullet I_{th}^a$	2.9 · 101 (2.4 · 101; 3.5 · 101)	0.3 (0.2; 0.3)	0.51	< 10-5	Gustafsson and Pinter, 1984a
	$C=k_a\bullet AH{P}^a$	2.8 · 102 (1.8 · 102; 4.4 · 102)	−0.4 (−0.5; −0.3)	0.24	< 10-5	Gustafsson and Pinter, 1984b
	$C=k_a\bullet AC{V}^a$	2.5 (0.7; 8.4)	0.8 (0.5; 1.0)	0.17	< 10-5	Gustafsson and Pinter, 1984b
$\mathit{\tau }$	$\tau =k_a\bullet R^a$	8.7 (7.2; 10.6)	0.5 (0.4; 0.6)	0.52	< 10-5	Burke and ten Bruggencate, 1971; Barrett and Crill, 1974; Gustafsson, 1979; Gustafsson and Pinter, 1984b; Zengel et al., 1985; Pinter and Vanden Noven, 1989; Sasaki, 1991	2.6 · 104 (1.5 · 104; 4.5 · 104)	−1.5 (−1.6; −1.4)	0.46	< 10-5	649
	$\tau =k_a\bullet AH{P}^a$	2.2 (1.3; 3.5)	0.8 (0.7; 1.0)	0.63	< 10-5	Gustafsson and Pinter, 1984b
	$\tau =k_a\bullet I_{th}^a$	2.3 · 102 (1.9 · 102; 2.7 · 102)	−0.4 (−0.5; −0.3)	0.72	< 10-5	Gustafsson and Pinter, 1984a
	$\tau =k_a\bullet AC{V}^a$	1.2 · 104 (2.2 · 103; 6.6 · 104)	−1.3 (−1.7; −0.9)	0.30	< 10-5	Gustafsson and Pinter, 1984b