Ключевые слова: aging, background, black, brain, care, color, concept, dark, degenerative, dementia, diagnosis, disease, disorder, dopamine, drink, effect, female, girl, glass, hand, hands, health, holding, illness, medicine, morbus, motor, muscle, neurology, parkinson, parkinsonian, parkinsonism, people, person, senior, shaking, stroboscope, suffering, symptom, syndrome, system, treatment, tremble, trembling, tremor, water, woman,