This contraction of m. platysma alone lacks expression

Guillaume-Benjamin-Amant Duchenne (de Boulogne)

National Gallery of Art

The image shows two individuals from the waist up, positioned closely to one another. The person on the left is standing or sitting with his shoulders straight, revealing his bare chest as his shirt is unbuttoned and open. His facial features are prominent with a furrowed brow and slightly parted lips. His hair is thinning and combed back, and he is wearing an open white shirt. The person on the right is leaning towards the other man's shoulder. His bald head is turned to the left, and he is wearing a dark suit while holding a probe-like tool against the other person's chest. The background is a plain, slightly textured wall with no distinct features.