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Glossary of Physiology Terms -
Undershoot

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Undershoot

Definition:
Refers to the hyperpolarization phase of the action potential.

It is also referred to as hyperpolarizing afterpotential.

See figure.

Related glossary terms/phrases:
Hyperpolarization

See also:
Important Features of the Neuronal Action Potential




Posted: Saturday, March 1, 2014
Last updated: Wednesday, March 12, 2025
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