This film was prepared by and under the direction of Ivan Petrovich Pavlov and was projected by him at the 14th Internationtal Consists of Physiology in Rome in 1932. After the congress, Pavlov donated the film to
Carla Fab who was then Professor and Chairman of the Department of Physiology at the University of Milano Medical School. The film was used in Foil's course of medical physiology in Milano and in Son Paulo, Brazil until his retirement. In 1960 the film was brought to
Detroit where 16mm copies were made.

The English version, which you are about to see, was produced by Piero P. Fod, Department of research, and Ernest A. Gaynes, Department of Ophthalmology, Sinai Hospital of Detroit and by Robin A. Broca, graduate student in physiology, Wayne State University, using the few frames of Russian caption which Pavlov had not removed in preparation for his spoken commentary in Rome. You will see these Russian captions flashing on the screen.

Production of this film was made possible by a grant from the Women's Guild of Sinai Hospital of Detroit, Michigan.