条件反射最广为人知的实验是在19世纪末由俄国生理学家巴甫洛夫所进行的。
tiáojiànfǎnshè zuì guǎngwéirénzhī de shíyàn shì zài shìjì mò yóu Éguó shēnglǐxuéjiā BāfǔLuòfū suǒ jìnxíng de 。
The most well-known conditioned reflex experiment was carried out at the end of 19th century by a Russian physiologist, Pavlov.