Table 4.

Neuron capacitances and areas

	R0 = 0, mV	C, nF	Area, cm2
LP1	−49.1	14.6	0.0163
LP2	−53.3	14.8	0.0164
LP3	−52.2	11	0.0123
LP4	−52	7.1	0.00788
PY1	−43.4	3.87	0.0043
PY2	−55.6	7.26	0.00806
PY3	−42.6	6.72	0.00746
PY4	−53.1	5.93	0.00659
PY5	−61.5	3.44	0.00382
All	−51.4	8.3 ± 4.2	0.0092
LP	−51.6	11.9 ± 3.6	0.0132
PY	−51.2	5.4 ± 1.7	0.006

The V_ssc at which R₀ crossed 0 (R₀ = 0) was calculated from linear fits to the R₀ coefficients (Fig. 8). Where C₁ linear fits were significant (P < 0.05), neuron capacitance (C) estimates were taken from the value of the fitted line at this R₀ = 0 potential; otherwise, the mean of all C₁ values at V_ssc closest to the R₀ = 0 potential were used. Area estimates were made assuming a specific capacitance of 0.9 μF/cm² (Gentet et al. 2000).