doing things that are very different from the left side of the brain so the hemispheres of the brain are primarily fed by the carotid arteries we call that the anterior circulation the brainstem in the cerebellum which is a coordination area are primarily fed by the vertebral we call that the posterior circulation so depending on what blood vessel is blocked up the symptoms can be incredibly variable so what would you expect might happen if you blocked off the left carotid artery what kind of symptoms yeah so we heard language and that's