Ключевые слова: aging, alzheimer, background, brain, brains, care, chaos, color, concept, degeneration, degenerative, dementia, depression, diagnosis, disability, disease, disorder, elderly, forget, health, illness, intelligence, letters, many, medical, memory, mental, mind, neurology, nobody, object, parkinson, patient, problem, psychology, schizophrenia, senior, skill, suffering, symptom, text, treatment, word, yellow,