Torsten Nils Wiesel is a Swedish neurophysiologist. Together with David H. Hubel, he received the 1981 Nobel Prize in Physiology or Medicine, for their discoveries concerning information processing in the visual system; the prize was shared with Roger W. Sperry for his independent research on the cerebral hemispheres.
Photo by Markus Marcetic for Young Acedemy of Sweden, under CC BY SA 4.0 license