The intramuscular nerve action potential.

The intramuscular nerve action potential.

Observations on the sensory nature of the intramuscular nerve action potential.

The nature and the origin of the small pre-potential wave which can be recorded immediately before the main muscle action potential on indirect stimulation was studied in the median nerve of 12 normal subjects. It is considered to be a sensory antidromic response recorded from the large afferent fibres which innervate the thumb because it was recorded in all 12 subjects, and the threshold was a...

Compound Nerve Action Potential of Common Peroneal Nerve and Sural Nerve Action Potential in Common Peroneal Neuropathy

To enhance the accuracy for determining the precise localization, the findings of the compound nerve action potentials (CNAPs) of the common peroneal nerve (CPN) were investigated in patients with common peroneal mononeuropathy (CPM) in the knee, and the sural sensory nerve action potentials (SNAPs) were also analyzed. Twenty-five patients with CPM in the knee were retrospectively reviewed. The...

The Compound Action Potential (CAP) of the Frog Sciatic Nerve

a) In mammals, large peripheral nerves, for example the vagus, the sciatic and the ulnar typically are bundles of thousands of individual axons enclosed in a loose connective tissue sheath, the Epineurium. Within the Epineurium, the axons are grouped in fascicles, encased in a more structured epithelial sheath (the perineurium). Each axon is surrounded by a thin connective tissue sheath, the en...

The Action Potential, Synaptic Transmission, and Maintenance of Nerve Function

1. Nongated ion channels establish the resting membrane potential of neurons; voltage-gated ion channels are responsible for the action potential and the release of neurotransmitter. 2. Ligand-gated ion channels cause membrane depolarization or hyperpolarization in response to neurotransmitter. 3. Nongated ion channels are distributed throughout the neuronal membrane; voltage-gated channels are...