What was Andreas Vesalius's contribution to modern psychology?
Generally speaking, Vesalius's contribution to psychology was his scientific approach to understanding the human body. Working on human cadavers, which remained a controversial practice in sixteenth century Europe, he refuted many aspects of Galenic theory, showing how and to what purpose many organs worked. In terms of the brain, which was already understood to be the source of the human intellect, Vesalius's work was the first to map out, so to speak, different parts of the brain. While he did not understand the function of each, his work did pave the way for a physiological approach to psychology.