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Threshold potentialThe threshold potential is the membrane potential to which a membrane must be depolarized to initiate an action potential. Additional recommended knowledgeIt often can be between −40 and -55 mV, but it can vary based upon several factors. If ion channels are available, that will move the potential in the direction of the equilibrium potential for that ion:
Therefore, resting ion channel for sodium will depolarize and thus excite, while channels for potassium or chloride will hyperpolarize and thus inhibit. |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Threshold_potential". A list of authors is available in Wikipedia. |