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Sensory nerve experiments, 19th-century artwork. The experimenter is placing pins in a man's neck, triggering various sensory nerves and receptors to produce illusions relating to the sensations of touch, pressure and temperature. The accompanying article refers to the research on this topic carried out by German physician Ernst Heinrich Weber (1795-1878). Artwork from the 14th volume (second period of 1894) of the French popular science weekly 'La Science Illustree'.
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