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Article: Electrophysiological and morphological heterogeneity of rat dorsal vagal neurones which project to specific areas of the gastrointestinal tract.

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Browning KN; Renehan WE; Travagli RA
J. Physiol. (Lond.), 1999


Table 1

Overview of electrophysiological properties

Fundus (n = 25–42) Corpus (n = 28–32) Antrum/pylorus (n = 24–30) Duodenum (n = 21–30) Caecum (n = 16–27)
Input resistance (MΩ) 400 ± 25*C,A/P,Ca 299 ± 19*F 291 ± 23*F 330 ± 28 302 ± 22*F
Action potential duration (ms) 3.29 ± 0.11 3.29 ± 0.18 2.89 ± 0.13*Ca 2.78 ± 0.12*Ca 3.53 ± 0.13*A/P,D
AHP amplitude (mV) 16.7 ± 0.49*D,Ca 17.4 ± 0.63*D,Ca 17.2 ± 0.77*D,Ca 22.1 ± 0.72*F,C 23.4 ± 0.87*F,C,A/P
AHP duration (T ms) 63.6 ± 3.93*Ca 64.3 ± 4.25*Ca 49.5 ± 2.76*D,Ca 77.4 ± 5.05*A/P 81.5 ± 5.34*F,C,A/P
No. of action potentials s−1 at 30 pA DC 2.50 ± 0.41 3.35 ± 0.34 3.39 ± 0.34 3.12 ± 0.37 2.50 ± 0.33
No. of action potentials s−1 at 270 pA DC 19.3 ± 1.4*D,Ca 15.6 ± 1.1*Ca 19.9 ± 1.6*D,Ca 12.7 ± 1.1*F,A/P 9.7 ± 1.1*F,C,A/P
IM (% presence) 35%*C,D,Ca 81%*F 55%*D 92%*F,A/P,Ca 67%*F,D
IH (% presence) 47%*C,A/P 75%*F 72%*F 79%* 65%
IK(IR) (% presence) 2.5%*Ca 3.1%*Ca 0%*Ca 0%*Ca 77%*F,C,A/P,D
Islow (% presence) 32%*C,Ca 66%*F,A/P 31%*C,Ca 48% 60%*F,A/P

  • ↵* The mean difference is significant at the 0.05 level vs. fundus (F), corpus (C), antrum/pylorus (A/P), duodenum (D) or caecum (Ca). Since not all the cells were used for all the measures, the range of n values have been quoted. For example, some cells received robust synaptic input and the presence of spontaneous excitatory and inhibitory synaptic potentials prevented accurate measurement of the AHPτ. Furthermore, in some neurones, a second action potential fired before baseline voltage was recovered, again preventing the correct measurement of the AHPτ. The values quoted for voltage dependent potassium currents refer to the proportion of neurones which displayed that current. The other neurones either did not exhibit that current, or its amplitude was below that of our detection system (10 pA).


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor antrum/pylorus-projecting neuron spike width (ms) 2.89 ± 0.13 (27) 2.89 (ms) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor duodenum-projecting neuron spike width (ms) 2.78 ± 0.12 (25) 2.78 (ms) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor caecum-projecting neuron spike width (ms) 3.53 ± 0.13 (21) 3.53 (ms) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor fundus-projecting neuron AHP amplitude (mV) 16.7 ± 0.49 (33) 16.7 (mV) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor corpus-projecting neuron AHP amplitude (mV) 17.4 ± 0.63 (30) 17.4 (mV) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor antrum/pylorus-projecting neuron AHP amplitude (mV) 17.2 ± 0.77 (27) 17.2 (mV) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor duodenum-projecting neuron AHP amplitude (mV) 22.1 ± 0.72 (25) 22.1 (mV) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor caecum-projecting neuron AHP amplitude (mV) 23.4 ± 0.87 (21) 23.4 (mV) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor fundus-projecting neuron input resistance (MΩ) 400.0 ± 25.0 (33) 400.0 (MΩ) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor fundus-projecting neuron AHP duration 63.6 ± 3.93 (33) 63.6 (ms) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor corpus-projecting neuron AHP duration 64.3 ± 4.25 (30) 64.3 (ms) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor antrum/pylorus-projecting neuron AHP duration 49.5 ± 2.76 (27) 49.5 (ms) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor duodenum-projecting neuron AHP duration 77.4 ± 5.05 (25) 77.4 (ms) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor caecum-projecting neuron AHP duration 81.5 ± 5.34 (21) 81.5 (ms) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor fundus-projecting neuron firing frequency (pA) 2.5 ± 0.41 (33) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor corpus-projecting neuron firing frequency (pA) 3.35 ± 0.34 (30) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor antrum/pylorus-projecting neuron firing frequency (pA) 3.39 ± 0.34 (27) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor duodenum-projecting neuron firing frequency (pA) 3.12 ± 0.37 (25) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor corpus-projecting neuron input resistance (MΩ) 299.0 ± 19.0 (30) 299.0 (MΩ) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor caecum-projecting neuron firing frequency (pA) 2.5 ± 0.33 (21) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor fundus-projecting neuron firing frequency (pA) 19.3 ± 1.4 (33) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor corpus-projecting neuron firing frequency (pA) 15.6 ± 1.1 (30) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor antrum/pylorus-projecting neuron firing frequency (pA) 19.9 ± 1.6 (27) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor duodenum-projecting neuron firing frequency (pA) 12.7 ± 1.1 (25) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor caecum-projecting neuron firing frequency (pA) 9.7 ± 1.1 (21) -- Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor antrum/pylorus-projecting neuron input resistance (MΩ) 291.0 ± 23.0 (27) 291.0 (MΩ) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor duodenum-projecting neuron input resistance (MΩ) 330.0 ± 28.0 (25) 330.0 (MΩ) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor caecum-projecting neuron input resistance (MΩ) 302.0 ± 22.0 (21) 302.0 (MΩ) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor fundus-projecting neuron spike width (ms) 3.29 ± 0.11 (33) 3.29 (ms) Data Table
Dorsal motor nucleus of vagus motor neuron Dorsal motor nucleus of vagus motor corpus-projecting neuron spike width (ms) 3.29 ± 0.18 (30) 3.29 (ms) Data Table