provide me with an example of a biographical sketch detailing the life of a neuroscientist who worked fromAntiquity to the mid-1800s. such as Santiago Ramn y Cajal with about 6 references from books and journal articles; it should focus on their principal scientific contribution to the field of neuroscience. It should be written as a paragraphed narrative, and must address the following questions. 1) What was the state of the field before the individual's research? 2) What methodology was employed? 3) How did their research change the greater understanding of their sub-discipline of neuroscience?