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Article: Heat-induced action potential discharges in nociceptive primary sensory neurons of rats.

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Greffrath W; Schwarz ST; Büsselberg D; Treede RD
J. Neurophysiol., 2009


TABLE 2.

Effect of warming on action potential properties in types 1, 2, and 3 neurons

ANOVA, Main Effect Type 1 (n = 9) Type 2 (n = 10) Type 3 (n = 6)
Property Group Temperature RT 34°C RT 34°C RT 34°C
Holding current, pA F(2,22) = 1.1, P = 0.35 F(1,22) = 12.0, ** −31.1 ± 10.1 −112.2 ± 33.4 −35.5 ± 29.7 −140.0 ± 31.7 −105.0 ± 46.3 −180.0 ± 86.7
AP threshold current, nA F(2,22) = 0.2, P = 0.81 F(1,22) = 20.2, *** 3.2 ± 0.3 5.3 ± 0.9 3.3 ± 0.3 6.1 ± 0.8 2.7 ± 0.3 5.4 ± 2.0
Maximum rate of AP rise, mV/ms F(2,22) = 0.9, P = 0.42 F(1,22) = 0.2, P = 0.63 116.0 ± 10.7 134.0 ± 6.0 115.0 ± 11.6 104.0 ± 8.9 140.0 ± 34.4 119.0 ± 14.9
Amplitude of action potential, mV F(2,22) = 0.03, P = 0.97 F(1,22) = 11.7, ** 115.0 ± 3.3 111.0 ± 2.8 119.0 ± 3.1 106.0 ± 4.0 120.0 ± 5.2 104.0 ± 8.0
Maximum rate of AP fall, mV ms−1 F(2,22) = 0.3, P = 0.71 F(1,22) = 3.0, P = 0.097 −88.0 ± 11.0 −106.0 ± 6.6 −78.0 ± 9.0 −90.0 ± 10.1 −80.0 ± 36.0 −84.0 ± 20.0
Decay time, ms F(2,22) = 3.4, P = 0.052 F(1,22) = 43.1, *** 2.5 ± 0.3 1.4 ± 0.2 3.0 ± 0.5 1.4 ± 0.2 4.6 ± 1.0 2.5 ± 0.6
  • Values for types 1, 2, and 3 are means ± SE; n values are in parentheses. Analysis was done by two-way ANOVA [group × temperature] with repeated measures for the factor temperature (room temperature [RT] and about 34°C).

  • ** P < 0.01;

  • *** P < 0.001.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source