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Article: Characteristics of sodium currents in rat geniculate ganglion neurons.

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Nakamura S; Bradley RM
J. Neurophysiol., 2011


Table 1.

Characteristics of Na2+ currents, IB4 reactivity, and capsaicin responses in different subpopulations of GG neurons

CT Neurons GSP Neurons PA Neurons
Cell diameter, μm 27.5 ± 0.02 27.3 ± 0.02 29.0 ± 0.02
RMP, mV −49 ± 0.2 −49 ± 0.3 −53 ± 0.2
Effect of TTX on spike firing Inhibited 60% inhibited, 40% unaffected Inhibited
TTX-S current density (at −10 mV), pA/pF 164.3 ± 11.2 143.6 ± 16.3 188.4 ± 10.3
TTX-R current density (at 0 mV), pA/pF 25.7 ± 3.3 77.2 ± 12.2 29.1 ± 3.2
IB4-positive neurons, % 73.1 66.7 91.7
Capsaicin-sensitive neurons, % 0 26.9 0

  • Values are means ± SE in chorda tympani (CT), greater superficial petrosal (GSP), and posterior auricular (PA) neurons. RMP, resting membrane potential; TTX-S and TTX-R, tetrodotoxin sensitive and tetrodotoxin resistant; IB4, isolectin B4.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Dorsal root ganglion cell cell diameter (μm) 27.5 ± 0.02 27.5 (um) Data Table
Dorsal root ganglion cell resting membrane potential (mV) -49.0 ± 0.2 -49.0 (mV) Data Table