Hartline, H. Keffer (Haldan Keffer), 1903-1983
Haldan Keffer Hartline (born December 22, 1903 in Bloomsburg, Pennsylvania, and died March 17, 1983 in Fallston, Maryland) was an American physiologist who was a co-recipient (with George Wald and Ragnar Granit) of the 1967 Nobel Prize in Physiology or Medicine for his work in analyzing the neurophysiological mechanisms of vision.
He attended the University of Pennsylvania and earned his medical doctorate from the Johns Hopkins School of Medicine in 1927. He was a professor at Cornell Medical College, Johns Hopkins School of Medicine, and Rockefeller University. He investigated the electrical responses of the retinas of certain arthropods, vertebrates, and mollusks, leading to a detailed understanding of the workings of individual photoreceptors and nerve fibres in the retina.
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