Torsten Wiesel marries Teeri Stenhammar. The relationship ends in 1970.

Torsten Niels Wiesel is born in Uppsala as the youngest of five children to his parents Fritz S. Wiesel and Anna-Lisa Bentzer. His father is chief psychiatrist and head of Beckomberga Hospital, a mental institution.

Torsten Wiesel marries Ann Yee. They have a daughter. The marriage ends in 1981.

Torsten Wiesel, David Hubbel and Roger W. Sperry are awarded the Nobel Prize in Physiology or Medicine in 1981. Wiesel and Hubel receive him for their discoveries concerning information processing in the visual system.

Torsten Wiesel marries Jean Stein.

In 1983 Torsten Wiesel moves to the Rockefeller University as a Vincent and Brooke Astor Professor. He functions as head of the laboratory of Neurobiology, working with Charles Gilbert on the circuitry of primary visual cortex. In 1991 he becomes president of the University, lasting till 1998. He remains the Director of the Shelby White and Leon Levy Centre for Mind, Brain and Behaviour.

Torsten Wiesel becomes an instructor in pharmacology at Harvard Medical School. He becomes a professor in the new department of neurobiology in 1968 and its chairman in 1971. Together with David Hubel He identifies specialized functions of individual cells in the brain´s visual Cortex and maps the functional architecture. They also studies the Development of visual cortex and the role of innate and experiential factors.

Torsten Wiesel becomes curios about the working of the nervous system, stimulated by lectures of Carl G. Bernhard and Rudolf Skoglund. Because of his background he is also interested in psychiatry and works for a year in different mental hospitals. He earns his Degree at the Karolinska Institute in Stockholm in 1954.

Torsten Wiesel is invited to the United States as a post-doctoral fellow in Dr. Stephen Kuffler´s Laboratory at the Wilmer Institute at John Hopkins Medical School. He becomes an assistant professor in 1958.

Torsten Wiesel attends Whitlockska Samskolan, a private school where he focuses mainly on sports.