An antidromic impulse in an
axon
An axon (from Greek ἄξων ''áxōn'', axis), or nerve fiber (or nerve fibre: see spelling differences), is a long, slender projection of a nerve cell, or neuron, in vertebrates, that typically conducts electrical impulses known as action po ...
refers to conduction opposite of the normal (
orthodromic
An orthodromic action potential, impulse runs along an axon in its Anterograde Tracing, anterograde direction, away from the Soma (biology), soma.
In the heart, orthodromic may also refer to an impulse going in the correct direction from the dendr ...
) direction.
That is, it refers to conduction along the axon away from the
axon terminal
Axon terminals (also called synaptic boutons, terminal boutons, or end-feet) are distal terminations of the telodendria (branches) of an axon. An axon, also called a nerve fiber, is a long, slender projection of a nerve cell, or neuron, that condu ...
(s) and towards the
soma
Soma may refer to:
Businesses and brands
* SOMA (architects), a New York–based firm of architects
* Soma (company), a company that designs eco-friendly water filtration systems
* SOMA Fabrications, a builder of bicycle frames and other bicycle ...
. For most neurons, their
dendrites
Dendrites (from Greek δένδρον ''déndron'', "tree"), also dendrons, are branched protoplasmic extensions of a nerve cell that propagate the electrochemical stimulation received from other neural cells to the cell body, or soma, of the n ...
,
soma
Soma may refer to:
Businesses and brands
* SOMA (architects), a New York–based firm of architects
* Soma (company), a company that designs eco-friendly water filtration systems
* SOMA Fabrications, a builder of bicycle frames and other bicycle ...
, or
axons
An axon (from Greek ἄξων ''áxōn'', axis), or nerve fiber (or nerve fibre: see American and British English spelling differences#-re, -er, spelling differences), is a long, slender projection of a nerve cell, or neuron, in vertebrates, th ...
are
depolarized forming an
action potential
An action potential occurs when the membrane potential of a specific cell location rapidly rises and falls. This depolarization then causes adjacent locations to similarly depolarize. Action potentials occur in several types of animal cells, ...
that moves from the starting point of the depolarization (near the cell body) along the axons of the neuron (
orthodromic
An orthodromic action potential, impulse runs along an axon in its Anterograde Tracing, anterograde direction, away from the Soma (biology), soma.
In the heart, orthodromic may also refer to an impulse going in the correct direction from the dendr ...
).
Antidromic activation is often induced experimentally by direct electrical stimulation of a presumed target structure.
Antidromic activation is often used in a laboratory setting to confirm that a neuron being recorded from projects to the structure of interest.
See also
*
Orthodromic
An orthodromic action potential, impulse runs along an axon in its Anterograde Tracing, anterograde direction, away from the Soma (biology), soma.
In the heart, orthodromic may also refer to an impulse going in the correct direction from the dendr ...
*
Neuron
A neuron, neurone, or nerve cell is an electrically excitable cell that communicates with other cells via specialized connections called synapses. The neuron is the main component of nervous tissue in all animals except sponges and placozoa. N ...
*
Dendrite
Dendrites (from Greek δένδρον ''déndron'', "tree"), also dendrons, are branched protoplasmic extensions of a nerve cell that propagate the electrochemical stimulation received from other neural cells to the cell body, or soma, of the n ...
*
Axon
An axon (from Greek ἄξων ''áxōn'', axis), or nerve fiber (or nerve fibre: see spelling differences), is a long, slender projection of a nerve cell, or neuron, in vertebrates, that typically conducts electrical impulses known as action po ...
*
Action potential
An action potential occurs when the membrane potential of a specific cell location rapidly rises and falls. This depolarization then causes adjacent locations to similarly depolarize. Action potentials occur in several types of animal cells, ...
References
Neurophysiology
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