Stimulation or excitation is the action of various agents (stimuli) on nerves, muscles, or a sensory end organ, by which activity is evoked; especially, the nervous impulse produced by various agents on nerves, or a sensory end organ, by which the part connected with the nerve is thrown into a state of activity, whether everyday general physical activity or sexual stimulation. Stimulation is often connected with psychological stimulation, which concerns how a stimulus affects a person’s thinking process. The word is also often used metaphorically. For example, an interesting or fun activity can be described as “stimulating”, regardless of its physical effects on nerves. Stimulate means to act as a stimulus to; stimulus means things that rouse to activity.
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