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Hyperpolarization


Hyperpolarization has several meanings:
In biology, hyperpolarization (biology) occurs when the strength of the electric field across the width of a cell membrane increases.
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Hyperpolarization has several meanings:
In biology, hyperpolarization occurs when a cell's membrane potential dips below its resting level.
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Hyperpolarization
Despite their name, some neurotransmitters inhibit the transmission of nerve impulses. They do this by opening
chloride channels and/or
potassium channels in the plasma membrane.
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hyperpolarization
An electrical state whereby the inside of the cell is made more negative relative to the outside than at the resting membrane potential.
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After opening, the sodium channels become inactivated as the potential becomes more positive, and they cannot open again until they are "reset" by hyperpolarization at the end of an action potential.
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Adenosine causes an acute activation of p42/p44 mitogen-activated protein kinase and NO release, with membrane hyperpolarization leading to increased system y+ activity in fetal endothelial cells.
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