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- Neural_accommodation abstract "Neural accommodation or neuronal accommodation occurs when a neuron or muscle cell is depolarised by slowly rising current (ramp depolarisation) in vitro. The Hodgkin–Huxley model also shows accommodation. Sudden depolarisation of a nerve evokes propagated action potential by activating voltage-gated fast sodium channels incorporated in the cell membrane if the depolarisation is strong enough to reach threshold. The open sodium channels allow more sodium ions to flow into the cell and resulting in further depolarisation, which will subsequently open even more sodium channels. At a certain moment this process becomes regenerative (vicious cycle) and results in the rapid ascending phase of action potential. In parallel with the depolarisation and sodium channel activation, the inactivation process of the sodium channels is also driven by depolarisation. Since inactivation is much slower than activation process, during the regenerative phase of action potential inactivation is unable to prevent the \"chain reaction\" like rapid increase in the membrane voltage.During neuronal accommodation the slowly rising depolarisation drives the activation and inactivation, as well as the potassium gates simultaneously and never evokes action potential. Failure to evoke action potential by ramp depolarisation of any strength had been a great puzzle until Hodgkin and Huxley created their physical model of action potential. Later in their life they received a Nobel Prize for their influential discoveries. Neuronal accommodation can be explained in two ways. \"First, during the passage of a constant cathodal current through the membrane, the potassium conductance and the degree of inactivation will rise, both factors raising the threshold. Secondly, the steady state ionic current at all strengths of depolarization is outward, so that an applied cathodal current which rises sufficiently slowly will never evoke a regenerative response from the membrane, and excitation will not occur.\" (quote from Hodgkin and Huxley)In vivo physiologic condition accommodation breaks down, that is long-duration slowly rising current excites nerve fibers at a nearly constant intensity no matter how slowly this intensity is approached.".
- Neural_accommodation wikiPageExternalLink HodgkinHuxleyActionPotentialModel.
- Neural_accommodation wikiPageExternalLink modeldb.
- Neural_accommodation wikiPageExternalLink HHindex.html.
- Neural_accommodation wikiPageExternalLink NeuralImpulsesTheActionPotentialInAction.
- Neural_accommodation wikiPageExternalLink BIOMD0000000020.
- Neural_accommodation wikiPageExternalLink static-pages.do?page=ModelMonth%2F2006-09.
- Neural_accommodation wikiPageID "39719252".
- Neural_accommodation wikiPageLength "7220".
- Neural_accommodation wikiPageOutDegree "20".
- Neural_accommodation wikiPageRevisionID "703916095".
- Neural_accommodation wikiPageWikiLink Action_potential.
- Neural_accommodation wikiPageWikiLink Anode_break_excitation.
- Neural_accommodation wikiPageWikiLink BioModels_Database.
- Neural_accommodation wikiPageWikiLink Category:Computational_neuroscience.
- Neural_accommodation wikiPageWikiLink Category:Electrophysiology.
- Neural_accommodation wikiPageWikiLink Category:Ion_channels.
- Neural_accommodation wikiPageWikiLink Category:Nonlinear_systems.
- Neural_accommodation wikiPageWikiLink Cell_membrane.
- Neural_accommodation wikiPageWikiLink Hodgkin–Huxley_model.
- Neural_accommodation wikiPageWikiLink Muscle.
- Neural_accommodation wikiPageWikiLink Neuron.
- Neural_accommodation wikiPageWikiLink Ramp_function.
- Neural_accommodation wikiPageWikiLink Sodium.
- Neural_accommodation wikiPageWikiLink Sodium_channel.
- Neural_accommodation wikiPageWikiLink Virtuous_circle_and_vicious_circle.
- Neural_accommodation wikiPageWikiLink Voltage-gated_ion_channel.
- Neural_accommodation wikiPageWikiLink Wolfram_Demonstrations_Project.
- Neural_accommodation wikiPageWikiLinkText "Neural accommodation".
- Neural_accommodation wikiPageWikiLinkText "accommodation".
- Neural_accommodation wikiPageUsesTemplate Template:Cite_journal.
- Neural_accommodation wikiPageUsesTemplate Template:Reflist.
- Neural_accommodation subject Category:Computational_neuroscience.
- Neural_accommodation subject Category:Electrophysiology.
- Neural_accommodation subject Category:Ion_channels.
- Neural_accommodation subject Category:Nonlinear_systems.
- Neural_accommodation comment "Neural accommodation or neuronal accommodation occurs when a neuron or muscle cell is depolarised by slowly rising current (ramp depolarisation) in vitro. The Hodgkin–Huxley model also shows accommodation. Sudden depolarisation of a nerve evokes propagated action potential by activating voltage-gated fast sodium channels incorporated in the cell membrane if the depolarisation is strong enough to reach threshold.".
- Neural_accommodation label "Neural accommodation".
- Neural_accommodation sameAs Q17062786.
- Neural_accommodation sameAs m.0w19h4_.
- Neural_accommodation sameAs Q17062786.
- Neural_accommodation wasDerivedFrom Neural_accommodation?oldid=703916095.
- Neural_accommodation isPrimaryTopicOf Neural_accommodation.