
	3D Medical Animations Close This information is provided by an independent source. Merck & Co. does not endorse and is not responsible for the accuracy of the content, or for the practices or standards of non-Merck sources. This information provided is not intended to be a substitute for professional medical advice. A licensed healthcare professional should be consulted for diagnosis and treatment of any and all medical conditions. The manufacturer of a product generally has the most complete information about that product. How to use How to use The world's largest library of 3D medical animations developed and copyrighted by Blausen Medical Communications. The Human Atlas figures rotating model, labeled slides, and printable text in addition to animated videos. Shows a video of the selected health topic. Controls play, pause, and restart of the video. Shows a summary of the selected health topic. Controls to scroll the text. Shows a 3 D model of the video. Controls to rotate the model. Shows slides from the video. Controls to change slides.

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This information is provided by an independent source. Merck & Co., Inc. is not responsible for this content. Please discuss any and all treatment options with your healthcare professional. The manufacturer of a product generally has the most complete information about that product.

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reinforcement (re″in-fors´mәnt) the increasing of force or strength. In the psychological theory of behaviorism, presentation of a stimulus following a response that increases the frequency of subsequent responses. This is a key concept in operant conditioning.

negative reinforcement withdrawal of a stimulus from the environment immediately after the response, so that the withdrawal serves to strengthen the response.

positive reinforcement addition of a stimulus to the environment immediately after the desired response has happened; this serves to strengthen the response (increase the likelihood of its occurring again). Examples of such reinforcement are food, money, a special privilege, or some other reward that is satisfying to the subject.

reinforcement of reflex strengthening of a reflex response by the patient's performance of some unrelated action during elicitation of the reflex.

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