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Article: An in vitro protocol for recording from spinal motoneurons of adult rats.

Full Text (publisher's website) ; Article Metadata ; Article Data (extracted)
Carp JS; Tennissen AM; Mongeluzi DL; Dudek CJ; Chen XY; Wolpaw JR
J. Neurophysiol., 2008



TABLE 1.Properties of hindlimb and pudendal motoneurons
Property Motoneuron
Hindlimb Pudendal
Resting potential, mV –66.9 ± 12.3 –59.8 ± 9.2**
AP amplitude, mV 78.7 ± 8.9 77.2 ± 7.9
Input resistance, mΩ 5.1 ± 3.4 9.2 ± 4.8***
Time constant, ms 3.6 ± 2.3 4.4 ± 2.0
AHP duration, ms 45.5 ± 12.8 47.6 ± 11.2
AHP half-time, ms 17.2 ± 7.0 18.6 ± 5.8
AHP amplitude, mV –3.0 ± 2.0 –4.3 ± 3.1*
Rheobase, nA 4.3 ± 3.0 2.4 ± 1.9**
Threshold depolarization, mV 18.2 ± 7.5 17.5 ± 6.5
Number of cells 32–35 49–57
Values are means ± SD. See text for motoneuron identification criteria. Amplitude of action potential (AP) elicited by brief [0.4- to 1.3-ms (typically 0.6-ms) current pulse]. Threshold depolarization from resting potential required to elicit AP.

* P < 0.05,

** P < 0.01, and

*** P < 0.001, different from hindlimb motoneurons by t-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 dorsolateral nucleus motoneuron resting membrane potential (mV) -59.8 ± 9.2 (64) -59.8 (mV) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar hind limb alpha motoneuron spike amplitude from resting (mV) 78.7 ± 8.9 (37) 78.7 (mV) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord dorsolateral nucleus motoneuron spike amplitude from resting (mV) 77.2 ± 7.9 (64) 77.2 (mV) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar hind limb alpha motoneuron input resistance (mΩ) 5.1 ± 3.4 (37) 5.1 (MΩ) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord dorsolateral nucleus motoneuron input resistance (mΩ) 9.2 ± 4.8 (64) 9.2 (MΩ) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar hind limb alpha motoneuron membrane time constant (ms) 3.6 ± 2.3 (37) 3.6 (ms) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord dorsolateral nucleus motoneuron membrane time constant (ms) 4.4 ± 2.0 (64) 4.4 (ms) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar hind limb alpha motoneuron AHP duration (ms) 45.5 ± 12.8 (37) 45.5 (ms) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord dorsolateral nucleus motoneuron AHP duration (ms) 47.6 ± 11.2 (64) 47.6 (ms) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar hind limb alpha motoneuron other (ms) 17.2 ± 7.0 (37) 17.2 (None) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord dorsolateral nucleus motoneuron other (ms) 18.6 ± 5.8 (64) -- Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar hind limb alpha motoneuron AHP amplitude (mV) -3.0 ± 2.0 (37) 3.0 (mV) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord dorsolateral nucleus motoneuron AHP amplitude (mV) -4.3 ± 3.1 (64) 4.3 (mV) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar hind limb alpha motoneuron rheobase (nA) 4.3 ± 3.0 (37) 4300.0 (pA) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord dorsolateral nucleus motoneuron rheobase (nA) 2.4 ± 1.9 (64) 2400.0 (pA) Data Table
Spinal cord ventral horn motor neuron alpha spinal cord lumbar hind limb alpha motoneuron resting membrane potential (mV) -66.9 ± 12.3 (37) -66.9 (mV) Data Table