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Article: Localization and function of the Kv3.1b subunit in the rat medulla oblongata: focus on the nucleus tractus solitarii.

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Dallas ML; Atkinson L; Milligan CJ; Morris NP; Lewis DI; Deuchars SA; Deuchars J
J. Physiol. (Lond.), 2005


Table 1. 

Comparison of the intrinsic electrophysiological properties and location of 4-AP-/TEA-sensitive and insensitive neurones within the NTS

Parameter 4-AP-/TEA-responsive (n = 81) Unresponsive (n = 16) Level of significance
NA, not applicable; NTS, nucleus tractus solitarii; RMP, resting membrane potential; AHP, afterhyperpolarization; FFINST.
Location Ventral/ventrolateral NTS Commissural NTS NA
RMP (mV) 69.5 ± 3.8 66.3 ± 5.7 n.s.
Input resistance (MΩ) 789 ± 96  954 ± 104 n.s.
Action potential duration (ms)  4.4 ± 1.2  7.2 ± 1.7 P < 0.05
AHP amplitude (mV) 16.1 ± 2.2 11.3 ± 2.7 P < 0.05
FFINST (Hz) 66.9 ± 5.3 38.4 ± 4.3 P < 0.05
Early accommodation (%) 32.4 ± 3.3   39 ± 5.3  n.s.
Late accommodation (%)    1.9 ± 0.2%   12.7 ± 2.3% P < 0.05

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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Nucleus of the solitary tract principal cell Ventrolateral Nucleus Tractus Solitarii 4-AP-/TEA-responsive cell input resistance (MΩ) 789.0 ± 96.0 (81) 789.0 (MΩ) Data Table
Nucleus of the solitary tract principal cell Comissural Nucleus Tractus Solitarii 4-AP-/TEA-unresponsive commissural cell input resistance (MΩ) 954.0 ± 104.0 (16) 954.0 (MΩ) Data Table
Nucleus of the solitary tract principal cell Ventrolateral Nucleus Tractus Solitarii 4-AP-/TEA-responsive cell spike width (ms) 4.4 ± 1.2 (81) 4.4 (ms) Data Table
Nucleus of the solitary tract principal cell Comissural Nucleus Tractus Solitarii 4-AP-/TEA-unresponsive commissural cell spike width (ms) 7.2 ± 1.7 (16) 7.2 (ms) Data Table
Nucleus of the solitary tract principal cell Ventrolateral Nucleus Tractus Solitarii 4-AP-/TEA-responsive cell AHP amplitude (mV) 16.1 ± 2.2 (81) 16.1 (mV) Data Table
Nucleus of the solitary tract principal cell Comissural Nucleus Tractus Solitarii 4-AP-/TEA-unresponsive commissural cell AHP amplitude (mV) 11.3 ± 2.7 (16) 11.3 (mV) Data Table
Nucleus of the solitary tract principal cell Ventrolateral Nucleus Tractus Solitarii 4-AP-/TEA-responsive cell firing frequency (Hz) 66.9 ± 5.3 (81) 66.9 (Hz) Data Table
Nucleus of the solitary tract principal cell Comissural Nucleus Tractus Solitarii 4-AP-/TEA-unresponsive commissural cell firing frequency (Hz) 38.4 ± 4.3 (16) 38.4 (Hz) Data Table
Nucleus of the solitary tract principal cell Ventrolateral Nucleus Tractus Solitarii 4-AP-/TEA-responsive cell adaptation percent (1 – first/last ISI) 32.4 ± 3.3 (81) 32.4 (ratio) Data Table
Nucleus of the solitary tract principal cell Comissural Nucleus Tractus Solitarii 4-AP-/TEA-unresponsive commissural cell adaptation percent (1 – first/last ISI) 39.0 ± 5.3 (16) 39.0 (ratio) Data Table
Nucleus of the solitary tract principal cell Ventrolateral Nucleus Tractus Solitarii 4-AP-/TEA-responsive cell resting membrane potential (mV) 69.5 ± 3.8 (81) -69.5 (mV) Data Table
Nucleus of the solitary tract principal cell Comissural Nucleus Tractus Solitarii 4-AP-/TEA-unresponsive commissural cell resting membrane potential (mV) 66.3 ± 5.7 (16) -66.3 (mV) Data Table