Ключевые слова: aging, alzheimer, background, brain, brains, care, chaos, color, concept, degeneration, dementia, depression, diagnosis, disability, disease, disorder, elderly, flat, forget, health, illness, intelligence, lay, letters, lilac, many, medical, memory, mental, mind, neurology, object, parkinson, patient, problem, psychology, purple, schizophrenia, senior, skill, suffering, symptom, text, top, treatment, view, violet, word,