section of a brain seen in profile, parts of the brain. degenerative diseases, parkinson, synapses, neurons, alzheimer’s

alzheimer alzheimers anatomy background biology black brain cancer care degenerative dementia depression diagnosis diagram disease diseases doctor examination forget head health hospital human illness illustration intelligence losing man medical medicine memory mental mind nerve neurologist neurology neurons neurosurgery old parkinson parts patient people profile remember render research scan schizophrenia science section seen silhouette skull specialist stroke synapse synapses technology thinking treatment