Nerve physiology

Axonal  Polyneuropathy changes in EMG

EMG/NCV section Learn about the Brain Learn about nerves Nerve Fibers conduction described in detail  below.

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Used by permission of John W. Kimball

Summation:

    1 - Temporal summation - transmission of an impulse by rapid stimulation of one or more pre-synaptic neurons

    2 - Spatial summation - transmission of an impulse by simultaneous or nearly simultaneous stimulation of two or more pre-synaptic neurons
     


Click to view different size nerve fibers.

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Autoimmune cause

Key words : action, potential, nerve, membrane, depolarizes, negative, electron;