medical of human brain arteries blockage

active activity anatomy arteries atrial auditory background blockage blood blue brain brains carotid cerebellum clot cluster cranial dyslexia eeg electrode epilepsy facial fibrillation flow focal four frontal generalized headache human hypoglossal illustration lobe lobes medical nerve nerves nervous neurology neuron parasympathetic partial pathways placement seizures stroke synapse trigeminal types vessels waves white