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Article: Early excitability changes in lumbar motoneurons of transgenic SOD1G85R and SOD1G(93A-Low) mice.

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Pambo-Pambo A; Durand J; Gueritaud JP
J. Neurophysiol., 2009


Table 1.

Spinal motoneurons passive properties

WT G85R G93A-Low
n 33 25 13
RMP, mV −58.2 ± 0.6 −57.8 ± 1.1 −55.0 ± 0.5***
Rin, MΩ 34.5 ± 3.5 33.1 ± 2.5 37.2 ± 4.2
Gn, nS 39.0 ± 3.5 34.5 ± 2.5 30.6 ± 3.0
τ1, ms 4.9 ± 0.3 4.1 ± 0.4 5.2 ± 0.3
Rheobase, nA 1.0 ± 0.1 0.7 ± 0.1 0.6 ± 0.1

  • All values are means±SE. RMP, resting membrane potential; Rin, input resistance; Gn, input conductance; τ1, first membrane time constant; rheobase, intensity of the injected current necessary to evoke one single spike with a 1-s-long current pulse; WT, wild type.

  • ↵*** P < 0.005, nonparametric permutation exact test.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Spinal cord ventral horn motor neuron alpha spinal cord lumbar motor neuron input resistance (MΩ) 34.5 ± 3.5 (33) 34.5 (MΩ) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar motor neuron membrane time constant (ms) 4.9 ± 0.3 (33) 4.9 (ms) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar motor neuron rheobase (nA) 1.0 ± 0.1 (33) 1000.0 (pA) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar motor neuron resting membrane potential (mV) -58.2 ± 0.6 (33) -58.2 (mV) Data Table