+**Excitation** is the process where a system, such as an atom, molecule, or neuron, absorbs [Energy](/wiki/Energy) and moves from its resting [Ground State](/wiki/Ground_State) to a higher energy level. This elevated state is temporary, often leading to a subsequent release of energy as the system returns to a more stable configuration.
+## See also
+- [Stimulus](/wiki/Stimulus)
+- [Ground State](/wiki/Ground_State)
+- [Emission](/wiki/Emission)
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