John Olney is a medical doctor and neuropathologist known for his work on brain damage. He coined the term excitotoxicity in his 1969 paper published in Science. Olney's lesions are named after him. In 1996 he was elected to the Institute of Medicine of the United States National Academy of Sciences. He has campaigned for greater regulation of monosodium glutamate (MSG), aspartame and other excitotoxins for over twenty years.
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- Olney JW (May 1969). "Brain lesions, obesity, and other disturbances in mice treated with monosodium glutamate". Science 164 (3880): 719–721. doi:10.1126/science.164.3880.719. PMID 5778021.
- Alumni interview. University of Iowa.
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- Barinaga M (January 1990). "Amino acids: how much excitement is too much?". Science 247 (4938): 20–22. doi:10.1126/science.2294587. PMID 2294587.