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Article: Effects of daily spontaneous running on the electrophysiological properties of hindlimb motoneurones in rats.

Full Text (publisher's website) ; Article Metadata ; Article Data (extracted)
Beaumont E; Gardiner P
J. Physiol. (Lond.), 2002


Table 1

Properties of motoneurones of controls and runners

Property ‘Fast’ motoneurones ‘Slow’ motoneurones
Controls Runners Controls Runners
Antidromic action potential amplitude (mV) 73.5 ± 8.9 74.9 ± 11.1 78.8 ± 14.0 85.5 ± 10.3*
 n 66 45 47 24
Cell input resistance (MΩ) 2.0 ± 1.2 1.6 ± 1.0 2.6 ± 1.7 2.5 ± 1.4*
 n 55 42 48 21
Rheobase (nA) 7.3 ± 3.9 7.7 ± 3.9 5.6 ± 3.6 5.2 ± 3.3*
 n 68 48 53 26
Rheobasic action potential amplitude (mV) 61.7 ± 7.3 61.0 ± 8.2 65.3 ± 8.5 73.4 ± 6.8 †
 n 70 48 52 26
Membrane time constant, τm (ms) 6.2 ± 2.2 4.9 ± 1.8 6.4 ± 1.9 6.5 ± 1.5*
 n 38 34 25 22
Resting membrane potential (mV) −60.4 ± 7.4 −61.7 ± 7.4 −60.9 ± 8.2 −66.7 ± 6.6 †
 n 69 48 53 26
Spike trigger level (mV) −41.8 ± 8.3 −43.2 ± 7.3 −40.4 ± 10.3 −47.3 ± 5.9 †
 n 68 48 52 26
Vth measured (mV) 18.4 ± 9.7 18.5 ± 9.2 21.0 ± 10.1 19.8 ± 7.3
 n 70 48 52 26
AHP half decay time (ms) 14.2 ± 4.2 15.6 ± 3.6 29.5 ± 5.5 29.2 ± 6.5
 n 58 46 53 26
AHP amplitude (mV) 1.8 ± 0.8 1.5 ± 0.7 2.8 ± 1.7 4.0 ± 2.0†
 n 58 46 50 26
Antidromic spike latency (ms) 1.6 ± 0.4 1.9 ± 0.3 2.5 ± 0.3 2.8 ± 0.2*
 n 58 46 50 26

  • Values are means ± s.d., with numbers of motoneurones below.

  • ↵* Significant main effects of motoneurone ‘type’ or

  • ↵† significant interaction effects of motoneurone ‘type’ and activity (P < 0.01).


Report miscurated data

Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Spinal cord ventral horn motor neuron alpha input resistance (MΩ) 2.0 ± 1.2 -- Data Table
Spinal cord ventral horn motor neuron alpha rheobase (nA) 7.3 ± 3.9 7300.0 (pA) Data Table
Spinal cord ventral horn motor neuron alpha spike amplitude (mV) 61.7 ± 7.3 61.7 (mV) Data Table
Spinal cord ventral horn motor neuron alpha membrane time constant (ms) 6.2 ± 2.2 6.2 (ms) Data Table
Spinal cord ventral horn motor neuron alpha resting membrane potential (mV) -60.4 ± 7.4 -60.4 (mV) Data Table
Spinal cord ventral horn motor neuron alpha spike amplitude (mV) 73.5 ± 8.9 73.5 (mV) Data Table
Spinal cord ventral horn motor neuron alpha AHP amplitude (mV) 1.8 ± 0.8 1.8 (mV) Data Table