Walking Troubles of Organic Hemiplegy (1898) is the first[1] documentary film in the world, created by Romanian neurologist Gheorghe Marinescu.
The film depicts several patients walking in four directions against a black background before and after treatment.
Marinescu came to the idea of making the film after having used chronophotography under the influence of Étienne-Jules Marey.
Marinescu praised the use of the cinematographic techniques in the scientific investigation.
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