Ivan Pavlov

Index

Ivan Pavlov……………………………… pg (1)

Early life…………………………………. pg (2)

His career………………………………...pg (4)

Classical conditioning…………………pg (7)

Conclusion………………………………. pg (9)

Ivan pavlov

Ivan Petrovich Pavlov (September [O.S. 14 September] 1849 – 27 February 1936) was a Russian physiologist known primarily for his work in Classical Conditioning. From his childhood days Pavlov demonstrated intellectual brilliance along with an unusual energy, which he named "the instinct for research". Inspired by the progressive ideas which D. I. Pisarev, the most eminent of the Russian literary critics of the 1860s and I. M. Sechenov, the father of Russian physiology, were spreading, Pavlov abandoned his religious career and decided to devote his life to science. In 1870 he enrolled in the physics and mathematics faculty at the University of Saint Petersburg to take the course in natural science. 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. He won the Nobel Prize for Physiology or Medicine in 1904.

Early life

Ivan Pavlov, the eldest of eleven children, was born in Ryazan (now the Central Federal District) of Russia. His father, Peter Dmitrievich Pavlov (1823–1899), was a village priest. His mother, Varvara Ivanovna Uspenskaya (1826–1890), was a devoted homemaker. As a child, Pavlov willingly participated in house duties such as doing the dishes and taking care of his siblings. He loved to garden, ride his bicycle, row, swim, and play gorodki; he devoted his summer vacations to these activities. Although able to read by the age of 7, Pavlov was seriously injured when he fell from a high wall onto stone pavement; he did not undergo formal schooling until he was 11 years old as a result of his injuries.

Pavlov attended and graduated from the Ryazan Church School before entering the local theological seminary. However, in 1870, Pavlov left the seminary without graduating to attend the university at St. Petersburg where he enrolled in the physics and math department and took natural science courses. In his fourth year, his first research project on the physiology of the nerves of the pancreas won him a prestigious university award. In 1875, Pavlov completed his course with an outstanding record and received the degree of Candidate of Natural Sciences. However, impelled by his overwhelming interest in physiology, he decided to continue his studies and proceeded to the Academy of Medical Surgery. While at the Academy of Medical Surgery, Pavlov became an assistant to his former teacher, Tyson, but left the department when Tyson was replaced by another instructor.

After some time, Pavlov obtained a position as a laboratory assistant to Professor Ustimovich at the physiological department of the Veterinary Institute. For two years, Pavlov investigated the circulatory system for his medical dissertation. In 1878, Professor S.P. Botkin, a famous Russian clinician, invited the gifted young physiologist to work in the physiological laboratory as the clinic's chief. In 1879, Pavlov graduated from the Medical Military Academy with a gold medal award for his research work. After a competitive examination, Pavlov won a fellowship at the Academy for postgraduate work. The fellowship and his position as Director of the Physiological Laboratory at the clinic of the famous Russian clinician, S. P. Botkin enabled Pavlov to continue his research work. In 1883, he presented his doctor's thesis on the subject of The centrifugal nerves of the heart and posited the idea of nervism and the basic principles on the trophic function of the nervous system. Additionally, his collaboration with the Botkin clinic produced evidence of a basic pattern in the regulation of reflexes in the activity of circulatory organs.

His Career

After completing his doctorate, Pavlov went to Germany where he studied in Leipzig with Carl Ludwig in the Heidenhain laboratories in Breslau. He remained there from 1884 to 1886. Heidenhain was studying digestion in dogs, using an exteriorized section of the stomach. However, Pavlov perfected the technique by overcoming the problem of maintaining the external nerve supply. The exteriorized section became known as the Heidenhain or Pavlov pouch. After two years (1884–1886), Pavlov returned from Germany to look for a new position. His application for the chair of physiology at the University of Saint Petersburg was rejected. Eventually, Pavlov was given the chair of pharmacology at the Tomsk University and then at the University of Warsaw. However, he went to neither place. In 1890, he was appointed the role of professor of Pharmacology at the Military Medical Academy and occupied the position for 5 years. Pavlov was invited to the Institute of Experimental Medicine in 1891 to organize and direct the Department of Physiology. Over a 45 year period, under his direction it became one of the most important centers of physiological research. While Pavlov directed the Department of Physiology at the Institute, he also transferred to the chair of physiology at the Medical Military Academy. This change in positions at the Academy occurred in 1895. He headed the physiology department at the Academy continuously for three decades.

Also, starting in 1901, Pavlov was nominated for the Nobel Prize in Physiology or Medicine for four successive years. However, he did not win because his nominations were not specific to any discovery and were based on a variety of laboratory findings. In 1904, Pavlov was awarded the Nobel laureate "in recognition of his work on the physiology of digestion, through which knowledge on vital aspects of the subject has been transformed and enlarged".

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