Well, when Pavlov, for instance, started before conditioning there was simply an unconditioned stimulus, the food in the mouth, and an unconditioned response, saliva.

比如，在条件作用形成之前，只是简单的存在着无条件刺激，即食物，以及无条件反应，即唾液。

youdao

Well, when Pavlov, for instance, started before conditioning there was simply an unconditioned stimulus, the food in the mouth, and an unconditioned response, saliva.

比如，在条件作用形成之前，只是简单的存在着无条件刺激，即食物，以及无条件反应，即唾液。

youdao