Nerve Conduction Velocity

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Jul 24, 2020, 6:28:07 PM

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May 5, 2014, 11:38:36 AM

θ = \sqrt{\frac{A}{2 \cdot R \cdot I} \cdot \frac{d^{2} v}{{d t}^{2}}}

$theta = sqrt( A /(2 * R * I )* (d^2v)/(dt^2) )$

Cross-Sectional Area (A)

$"Cross-Sectional Area" (A)$

Resistance (R)

$"Resistance" (R)$

Capacitance (I)

$"Capacitance" (I)$

2nd derivative of membrane voltage to time \frac{d^{2} v}{{d t}^{2}}

$"2nd derivative of membrane voltage to time" (d^2v)/(dt^2)$

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cbe3a6e7-d449-11e3-b7aa-bc764e2038f2

The metric, Nerve Conduction Velocity (NCV), results from a test to see how fast electrical signals move through a nerve. The NCV test is used to diagnose nerve damage or destruction. The result is usually reported in units of meters per second. The inputs to this equation are:

A = cross-sectional area (typical units of Sq
I = Capacitance
$d^{2}$ $d^2$ V/ ${d t}^{2}$ $dt^2$ = Second derivative of membrane voltage to time (assumed here to be a constant)
R = Resistance

/attachments/cbe3a6e7-d449-11e3-b7aa-bc764e2038f2/NerveConductionVelocity-illustration.png

The Nerve Conduction Velocity test is used to diagnose nerve damage or destruction. Occasionally, the test may be used to evaluate diseases of nerve or muscle, including myopathy, Lambert-Eaton syndrome, or myasthenia gravis.

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