Hibbing Junior College, Hibbing, Minnesota, United States
Rossen graduated from Hibbing Junior College in 1929.
University of Minnesota, Minneapolis, Minnesota, United States
Rossen studied at the University of Minnesota, and received a Bachelor of Medicine degree in 1933 and the Doctor of Medicine in 1934.
Rossen graduated from Hibbing Junior College in 1929. He then studied at the University of Minnesota, and received the Bachelor of Medicine degree in 1933 and the Doctor of Medicine in 1934.
Rossen became an intern at the University of Minnesota Medical Center in 1934-1935. He then served as a clinical director and director of research program of Saint Peter (Minnesota) Eastern State Hospital in 1936-1938.
He became a director of Electroencephalogram and Research Laboratory in Hastings Eastern State Hospital in 1938-1954. From 1940 to 1954 he was a psychiatric consultant at State Prison, Stillwater, Minnesota, and at State Training School for Boys, Red Wing, Minnesota. In 1950-1952 he was a commissioner for mental health in Minnesota.
Rossen was a director of L.E. Phillips Psychobiological Research Symposium and of Mount Sinai Hospital, Minneapolis, in 1954-1974, also served as psychiatric consultant. He then became a director of L.E. Phillips Clinical Electroencephalogram, Sleep and Dream Laboratory in 1959-1974.
Rossen was a clinical professor of neuropsychiatry at the University of Minnesota until 1961.
Rossen was a member of the Minnesota Government's Advisory Committee on Mental Health, the Committee on Health, the Welfare and Rehabilitation, the Blue Ribbon Committee on Mental Health, the American Academy of Neurology, the American College of Chest Physicians, the American College of Cardiology, the American Medical Association, the Hennepin County Medical Society, the American Electroencephalogram Society, the American Heart Association, the American Epilepsy Society, the Eastern Psychoanalytic Association, the Minnesota Neurological Association, the Minnesota Psychiatric assosiation, and the New York Academy of Sciences.
Rossen married Beatrice R. Cohen on July 28, 1934. They had two daughters.