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    Hyperpolarization (biology)

    fearlove
    fearlove


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    Hyperpolarization (biology) Empty Hyperpolarization (biology)

    Post by fearlove Sun Oct 30, 2011 2:50 pm

    Hyperpolarization is a change in a cell's membrane potential that makes it more negative. It is the opposite of a depolarization.
    Hyperpolarization is often caused by efflux of K+ (a cation) through K+ channels, or influx of Cl– (an anion) through Cl– channels. On the other hand, influx of cations, e.g. Na+ through Na+ channels or Ca2+ through Ca2+ channels, inhibits hyperpolarization. If a cell has Na+ or Ca2+ currents at rest, then inhibition of those currents will also result in a hyperpolarization.
    Because hyperpol

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