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Medical Definition of CYBERNETICS. : the science of communication and control theory that is concerned especially with the comparative study of automatic control systems (as the nervous system and brain and mechanical-electrical communication systems).
Definition and History. Biomechanics is the study of how the systems and structures of biological organisms-from the smallest plants to the largest animals-react to various forces and external stimuli. In humans, biomechanics often refers to the study of how the skeletal and musculature systems work under different conditions.