Answer:
Rufus of Ephesus
Step-by-step explanation:
By the first century A. D., Alexandrian anatomists such as Rufus of Ephesus had provided a general physical description of the brain. Basic structures such as the pia mater and dura mater (the soft and hard layers encasing the brain) were identified in addition to the basic divisions of the brain itself. Building upon this research in the next century, the Roman physician Galen concluded that mental actively occurred in the brain rather than the heart, as Aristotle had suggested. His observations of the effects of brain injuries on mental activity formed an important practical basis for his conclusions. Galen concluded that the brain was the seat of the animal soul -- one of three "souls" found in the body, each associated with a principal organ.