Excitation
Excitation
Excitation (pronounced: eks-i-tey-shuhn) is a term used in various fields such as Physics, Biology, and Medicine. In a general sense, it refers to the process of increasing the level or intensity of something, or the state of being excited.
Etymology
The term 'Excitation' is derived from the Latin word 'excitare', which means 'to rouse' or 'to stir up'.
In Medicine
In Medicine, excitation often refers to the process where nerve cells are activated to relay a signal or perform a function. This is usually achieved through the transfer of electrochemical signals across the cell membrane.
Related Terms
- Action potential: The change in electrical potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell.
- Depolarization: The process by which the cell's charge becomes less negative, often as a result of excitation.
- Hyperpolarization: The change in a cell's membrane potential that makes it more negative, often as a result of inhibition.
- Refractory period: The period immediately following stimulation during which a nerve or muscle is unresponsive to further stimulation.
See Also
External links
- Medical encyclopedia article on Excitation
- Wikipedia's article - Excitation
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