Wikimedia Commons
The muscle of attention (left); Eyebrow contraction due to bright light (right)
Guillaume Duchenne de Boulogne (1806–1875)
photograph in the National Gallery of Art (NGA 169264)
- Fecha1854
- Técnicaalbumen print
- Dimensiones22.1 × 16.7 cm
- Se expone enGalería Nacional de Arte
Washington D. C., Estados Unidos