How is the brain affected by a stroke?

Stroke: Stroke is brain damage caused generally by blood vessel obstruction or bleeding in the brain. The brain is a marvelously complex structure and damage in one area may affect many through complex connections. The effect (s)on the patient depend on the location of the damage in the brain. Sometimes the function can be retrained to other areas compensating for the damage and sometimes not

Depends on the area: Strokes cause brain damage, but the symptoms a patient experiences will vary based on the location of the brain damage. If it affects the part of the brain controlling movement, it will cause weakness. If it affects the part controlling vision, it will cause vision problems. Most commonly strokes present with face, arm or leg weakness, sensory or visual disturbances, and/or speech difficulty.