Stimulus

Definition

noun, plural: stimuli

(1) (physiology) A detectable change in the internal or external environment.

(2) (physiology) That which influences or causes a temporary increase of physiological activity or response in the whole organism or in any of its parts.

(3) That which can evoke a response or has an influence on a system to act.


Supplement

Any of the five senses will respond to a particular stimulus. Based on the stimuli applied to the sensory organs, there are two kinds of stimuli:


Word origin: From Latin stimulus (“‘goad, prick’”)

Related terms:


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