Stimulus (physiology)

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In physiology, a stimulus is a detectable change in the internal or external environment.

When a stimulus is applied to a sensory receptor, it elicits or influences a reflex via stimulus transduction.

A stimulus is often the first component of a homeostatic control system.

When a sensory nerve and a motor nerve communicate with each other, it is called a nerve stimulus. Template:Neuroscience-stubda:Stimulus de:Reiz et:Stiimul fr:Stimulus ru:Стимул sv:Stimulus zh:刺激