Oliva Nantes Barrera

Oliva Sabuco de Nantes Barrera was a Spanish writer in holistic medical philosophy in the late 16th – early 17th century. She was interested in the interaction between the physical and psychological phenomena; therefore, she wrote a collection of medical and psychological treatises that target human nature and explain the effects of emotions on the body and soul. She analyzed theoretical claims of ancient philosophers and wrote an early theory of what is now considered applied psychology.