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Dr. Torsten Wiesel

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Dr. Torsten Wiesel, who was half of a long-lived scientific partnership that received a Nobel Prize for explaining how the brain processes signals from the eye to create images of the world, died XXX. He was XXX.
XXX announced his death.
Dr. Wiesel and his collaborator, Dr. David Hubel, shared the 1981 Nobel in Physiology or Medicine with Roger Sperry for discovering ways the brain processes sensory information. Dr. Wiesel and Dr. Hubel focused on the visual system, initially in cats and later in monkeys; Dr. Sperry unraveled the functions of the brain’s left and right hemispheres.
Before Dr. Wiesel and Dr. Hubel started their research in the 1950s, scientists generally believed that the brain functioned like a movie screen, displaying images …show more content…

They further discovered that the cells were specialized—some preferred horizontal lines; others, vertical lines or sharp angles.
During their 20-year collaboration, Dr. Wiesel and Dr. Hubel also showed that sensory deprivation early in life can permanently alter the brain’s ability to process images, causing vision impairments. Their work was the first to demonstrate the existence of a “critical period” during which the brain must develop crucial connections to the eye.
Researchers have since found evidence of “critical periods” in hearing, language acquisition and smell.
“David Hubel and Torsten Wiesel provided a quantum step in our understanding of the visual system,” Robert H. Wurtz, a neuroscientist, wrote in a review article about their work.
Their initial discovery about how vision works resulted from luck. The scientists had spent days trying to nudge brain cells in cats to respond to dark and light spots. They waived their arms, and mostly as a joke, showed the cats images of glamorous women from …show more content…

Before Dr. Wiesel’s and Dr. Hubel’s research, physicians removed cataracts from infants between ages 6 months and 24 months with poor results.
Dr. Wiesel and Dr. Hubel were recruited with their mentor, Dr. Kuffler, to Harvard Medical School in 1959. Dr. Wiesel was named a full professor at Harvard in 1964 and he became chair of the medical school’s department of neurobiology in 1973. Dr. Wiesel was soon immersed in administrative duties; Dr. Hubel started traveling to give lectures about their work. Their research, now focused on the higher visual areas of the brain, faltered. Soon, they parted ways.
“David and I never spent much time together outside the lab; what developed between us, our private dialogues, took place while we carried out our experiments,” Dr. Wiesel wrote. “When those explorations stalled, when the wonder faded, so did our collaboration.” In 1983 he moved to Rockefeller University to establish a neurobiology lab and in 1991 he was named president of Rockefeller. Before stepping down in 1998, he formed six new research institutes and an affiliation with the Aaron Diamond Aids Research Center. After that, he worked to expand training opportunities for young scientists in the U.S. and

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