Ключевые слова: aging, alzheimer, alzheimers, amnesia, brain, concept, confusion, damage, degeneration, dementia, depression, disease, elder, elderly, expression, forget, function, head, health, human, human head, ideas, illness, injury, inspiration, intelligence, loss, lost, memory, mental, mind, neurology, old, parts, pensioner, problem, profile, progression, question, remember, sad, schizophrenia, senior, social, stress, stroke, trauma, tumor, wisdom, worried,