He also mentioned that these symptoms could be caused by a blockage of one of the main arteries that supply blood to the brain. From postmortem studies, he provided information on the carotid and vertebral arteries that supply the brain with blood.
Additionally, he pointed out that these symptoms might arise from a clog in one of the main vessels supplying blood to the brain. Through autopsy examinations, he shared information regarding the carotid and vertebral arteries that supply the brain with oxygenated blood.