Before we get started, let’s briefly review some terms with which you should already be familiar. The first is stimulus, which can be defined as a physical energy change capable of affecting an organism through one of its sensory receptors or free nerve endings.
Term | Definition |
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Stimulus | A physical energy change capable of affecting an organism through one of its receptors: photoreceptors, phonoreceptors, chemoreceptors (gustatory and olfactory), mechanoreceptors (touch), thermoreceptors, and free nerve endings. |
Stimulus can also be unconditioned and conditioned.
a stimulus is can also be defined as anything that influences behavior
a physical energy that effects an organism
stimuli affect organisms through receptors
A stimulus is an energy change that affects an organism through its receptor cells.