The golden time to treat and save a person's life from a stroke is < 4.5 hours after a stroke. Therefore, the signs of a stroke need to be detected early so that emergency treatment can be timely, helping to save lives so that the patient can recover completely.

A stroke is a condition in which blood flow to part of the brain is suddenly reduced or stopped, which leads to a lack of oxygen and nutrients in brain tissue, causing brain cells to die within minutes.