In the case of the stomach, however, the nerves of the glandular cells were always severed when constructing an artificially isolated pouch and this, naturally, affected the normal work of the stomach.

He noticed that the dogs tended to salivate before food was actually delivered to their mouths and set out to investigate this "psychic secretion" as he called it. Pavlov's mother Varvara Ivanovna Uspenskaya (1826–1890) was a devoted homemaker. Pavlov’s laboratory housed a full-scale kennel for the experimental animals.

Ivan Pavlov devoted his life to the study of physiology and sciences making several remarkable discoveries and ideas that were passed on from generation to generation. From his childhood days Pavlov demonstrated intellectual brilliance along with an unusual energy which he named "the instinct for research". S.