The results from the experimental basis of the Pavlov summary learn is 4. 1. the loss or reduce level (Extinction), UCS at all for very long without CR, conditional response (CR) will gradually decrease and disappear.
From the results Pavlov summary basis of learning 4 folds 1. To losing or reducing conditions (Extinction) when CR for a long time. Without UCS, conditional response (CR) is gradually reduced, and disappear.