About the film
Mechanics of the Brain is a 1926 Soviet documentary film directed by Vsevolod Pudovkin, a popularization of Ivan Pavlov's studies in classical conditioning. The picture is considered the first Russian popular science film. The motion picture is the first independent work of Pudovkin as a director and also marks the start of his collaboration with cinematographer Anatoli Golovnya.
From the film's Wikipedia article (CC BY-SA 4.0).