Portrait of a test subject during electrostimulation: 'un Vieillard'. Unnumbered page with photo 39 from Mécanism de la Physionomy Humaine ou analysis Électro-Physiologique de l'Expression des Passions (Atlas).


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Photo credit: © BTEU/RKMLGE / Alamy / Afripics
License: Licensed
Model Released: No

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