Ivan Sechenov Portrait by Ilya Repin
Ivan Mikhaylovich Sechenov (August 13 1829, November 15 1905), was a Russian physiologist. Ivan Pavlov referred to him as the "Father of Russian physiology and scientific psychology". Sechenov is also considered one of the originators of objective psychology.
Sechenov authored the classic, Reflexes of the Brain, introducing electrophysiology and neurophysiology into laboratories and teaching of medicine. He is also recognized as one of the three scholars - along with John B. Watson and Jean Piaget - who independently arrived at the conclusion that the activities that serve as elements of thinking are internalized or "ractional" versions of motor responses.