Pavlov - Conditional reflexes

Pavlov has a research topic on gastric secretion. Whenever he ate, food in the stomach would release a large amount of gastric digestible food, Pavlov had conducted experiments on dogs, he wanted to know how the brain communicates commands to the stomach?

One day Pavlov and his assistant conducted gastric secretions for an old dog that had been domesticated for many years. The dog has lived in the laboratory for many years, it is familiar to all the staff who do the experiment here. Dogs are a type of person who understands people, people who keep dogs every day bring food to them, so the dogs here know people who raise them.

The old dog said it was very smart, he knew Pavlov was the leader here, so he was very attached to him. He was brought up to stand on the experimental podium, and every drop of flavored fluid flowed out and was put into a tray through a duct. The lab was so quiet that it sounded like a light sigh. An hour passed, and the staff did the experiments while observing and taking notes. The taste of the dog secretes normally, about 25 drops per minute .

Suddenly outside the door echoed the footsteps of the dog-rearing staff, then the employee calmed the dog's food through the door of the lab, the step was farther away and lost.

At that time, the experimental staff discovered that the discharge of dog secretions increased, about 100 drops per minute. This phenomenon had never happened before, but the laboratory staff looked around in surprise but found nothing strange. They invited Pavlov to report to him this strange phenomenon. Pavlov finished listening in surprise, carefully observing the lab, but did not find anything unusual, from that moment on he was absorbed in thought.

When people were thinking that they had not found the cause, they heard the footsteps of the remote dog worker resurrecting him, and he finished feeding the dog. When the employee brought dog food through the door, Pavlov and the lab staff found that the secretions of the dog secreted greatly. The experimental staff suddenly understood and told Pavlov that just now, because a dog-keeping employee had passed through the door, the dog's gastric juices had become so much more.

Pavlov thought, did the dog's secretions increase so much, is this phenomenon related to the dog's footsteps? To redefine this, Pavlov told the dog breeder every 15 minutes to go back to the lab door once, doing so three times.

The employee who listened to Pavlov said it was strange, but he still followed his request. Pavlov and the lab staff were happy to discover that every time a dog employee passed in front of the laboratory, the dog's fluids suddenly increased. Pavlov thought: "The dog's footsteps are associated with the appearance of food, long after it and the food has a special relationship through the dog's head, ie the footsteps of the dog owner can instead of food, the sound of those footsteps comes to a dog who knows right away that the food is about to be delivered, through the cerebral nerve, ordered to make the stomach become more gastric. "

From this discovery, Pavlov thought of any kind of signal such as bell, light, whistle, . As long as it was associated with the appearance of food for some time, it was it will work as well.

The next day, Pavlov told the dog owner to bring food to the dog to shake the bell first. After a month, this training has a preliminary result, this news has made many people excited, everyone came to see and see now for dogs to eat just shake the bell all the dogs Here, they are all fond of tangerine, fighting over food troughs waiting for people to eat.

But this experiment only works with experimental dogs that have been trained for a long time, but for dogs that are newly born and untrained it is not possible.Pavlov thinks this is a kind of reaction to external stimulation, which he calls the "conditioned reflex" of animals.

Pavlov later studied these issues in depth and wrote his famous work. Because of these achievements Pavlov received the Nobel Prize. Pavlov knew that science and infinite, he still had to continue striving tirelessly for it.

"The science required in each person must have a spirit of working urgently and great enthusiasm ".
- Pavlov -
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