Arvid Carlsson was a Swedish neuropharmacologist who is best known for his work with the neurotransmitter dopamine and its effects in Parkinson's disease. For his work on dopamine, Carlsson was awarded the Nobel Prize in Physiology or Medicine in 2000, together with Eric Kandel and Paul Greengard. The Nobel Prize in Physiology or Medicine 2000, announced October 9, 2000. Arvid Carlsson, Paul Greengard, and Eric Kandel, “for their discoveries concerning signal transduction in the nervous system”. Arvid Carlsson: born 1923, Uppsala, Sweden. Paul Greengard: born 1925, New York, NY, USA. Eric Kandel: born 1929, Vienna, Austria. Wiki link Wiki link Wiki link Data: the Nobel Foundation (CC0).