Born in Vienna, Mr. Rosenblith studied there and in Berlin, Lausanne, Paris and Bordeaux. He earned degrees in communications engineering from the University of Bordeaux in 1936 and Ecole Superieure d'Electricite, Paris, in 1937. In 1939, he came to the United States to study the effects of industrial noise on humans. When the outbreak of World War II prevented his return to France, he conducted research and taught physics at New York University and the University of California, Los Angeles.
Mr. Rosenblith pioneered the use of computers and mathematical models in the study of the brain as a biophysical information handling system.He joined the faculty of the Massachusetts Institute of Technology in 1951 as an associate professor of communications biophysics in the Department of Electrical Engineering, becoming full professor in 1957 and institute professor in 1975. He served on the board of governors of the Weizmann Institute of Science and the Brandeis University board of trustees.