Ibn Sina was a dualist, saying the the body and the mind are two distinct substance (just as Plato did). He came up with the Floating Man experiment to demonstrate his thinking.
By all account Acivenna was a brilliant person, memorizing the Qur'an by age 10, surpoassing this educators in logic by age 12, studying medicine by age 16 and so forth. His study of medicine helped him cure the Sultan, therefore giving him access to the Sultan's extensive library.
Acivenna was a man with great medical knowledge, his Canon of Medicine influenced European Schools of medicine into the 17th century. He also studied: physics, natural sciences and metaphysics. He was already writing books by the time he was 21 years of age, with his Canon of Medicine being his renown work. He wandered for years from one place to the next until he settled in Hamadan living there until the death of the emir, when he left to live the last 12 years of his life working with the ruler in Isfahan. He died at 58 years old from severe Colic.