Ключевые слова: arm, attempt, brain, care, check, closeup, control, degenerative, diagnosis, disability, disorder, draw, elderly, essential, failure, finger, fingers, hand, health, health care, human, impairment, impediment, incurable, medical, medical illness, medicine, mental, muscle, nervous, neuropathy, old, parkinson, pen, repetition, sample, shake, spiral, symptom, system, test, tremble, tremor, uncontrollable, uncontrolled, uneven, unsteady notebook, weakness, write,