Ключевые слова: aging, alzheimer, background, blue, brain, brains, broken, care, chaos, color, composition, concept, degeneration, dementia, depression, diagnosis, disability, disease, disorder, elderly, forget, gears, head, health, human, illness, intelligence, mechanism, medical, memory, mental, mind, neurology, object, paper, parkinson, patient, problem, psychology, schizophrenia, senior, shape, sheet, skill, suffering, symptom, top, treatment, view,