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stimulus |
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stimulus 1. any drug, agent, electrical impulse, or other factor able to cause a response in an organism 2. an object or event that is apprehended by the senses 3. Med a former name for stimulant stimulus [′stim·yə·ləs] (control systems) A signal that affects the controlled variable in a control system. (physiology) An agent that produces a temporary change in physiological activity in an organism or in any of its parts. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Positive reinforcement is used whenever a desirable outcome follows an appropriate response, and negative reinforcement is used whenever an aversive stimulus or state of affairs is removed following an appropriate response. Although taste aversions generalize to other foods, mammalian herbivores continue to taste aversive foods in small quantities and readily resume consumption when the aversive stimulus is reduced or removed (76). |
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