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Glossary Term

Excitation Threshold

The excitation threshold is the minimum level of depolarization required for an action potential to occur in nerve and muscle cells. It plays a crucial role in the all-or-none response of these cells to a stimulus.

Excitation threshold: The level that a depolarization must reach for an action potential to occur. The excitation threshold is a contributing factor to the "all-or-none" response of muscle and nerve cells to a stimulus.

Artwork by Synaptidude at en.wikipedia  - From en:Image:Action potential vert.png ; Modified version of older Image:Action potential reloaded.jpg .




  1. Activation Threshold
  2. Threshold potential