Answer:
Demons
Explanation:
Demons are a popular word in the ancient history of psychology. In ancient history, it is believed that the person is ill has been possessed by demons. They believe that trephination was the procedure through which people have become release from possession. It has been believed a whole done in the brain of a possessed person.
The spirit vanished out through trephination. It was an ancient procedure or a treatment for mentally ill people. It is believed that the person is possessed by demons. It was a very dangerous procedure. During this procedure, many of the times patients get died.