Distinct target cell-dependent forms of short-term plasticity of the central visceral afferent synapses of the rat

Table 2 Cell and synaptic characteristics of DiI(+) type I and type II DMX neurons

	DiI(+) DMX neuron		pvalue
	Type I	Type II
Longitudinal soma size (μm)	29.3 ± 1.3 (21)		NS¹
	29.2 ± 1.4 (17)	30.0 ± 4.6 (4)	NS²
Resting membrane potential (mV)	-60.0 ± 1.1 (20)		NS¹
	-60.6 ± 1.3 (16)	-57.75 ± 1.5 (4)	NS²
Cell capacitance (pF)	26.8 ± 1.8 (21)		NS¹
	27.3 ± 2.2 (17)	24.9 ± 3.0 (4)	NS²
Input resistance (MΩ)	515.8 ± 59.0 (21)		<0.01*
	559.9 ± 63.4 (17)	328.0 ± 143.2 (4)	NS²
EPSC amplitude (pA) (submaximal stimulation)	114.0 ± 17.4 (21)		<0.01*
	110.4 ± 18.8 (17)	129.2 ± 62.4 (4)	NS²
Decay time-constant (ms)	8.5 ± 0.9 (21)		NS¹
	7.7 ± 0.5 (17)	12.2 ± 1.0 (4)	NS²
Time-to-peak (ms)	9.9 ± 0.6 (21)		NS¹
	9.3 ± 0.4 (17)	12.6 ± 0.2 (4)	NS²

Data are expressed as mean ± SEM. Numbers in parentheses indicate the number of neurons. NS¹, the distribution of the values obtained from whole DiI(+) neurons was not significantly (p > 0.05) different from that from whole DMX neurons that were recorded without preceding retrograde labeling (Kolmogrov-Smirnov test). *, significantly different from the distribution of the values from whole DMX neurons. NS², not significantly different between type I DMX and type II DMX neurons (p > 0.05).

ISSN: 1471-2202