Jean Pierre Flourens
Marie Jean Pierre Flourens (13 April 1794 – 6 December 1867), father of Gustave Flourens, was a French physiologist, the founder of experimental brain science and a pioneer in anesthesia. Through the study of ablations on animals, he was the first to prove that the mind was located in the brain, not the heart.
Neuroscientist
Plato believed that the brain was the locus of mental processes. However, Aristotle believed instead the heart to be the source of mental processes and that the brain acted as a cooling system for the cardiovascular system.