Ключевые слова: abstract, adult, aged, aging, alone, arm, black, black and white, body, bw, dark, elder, elderly, emotional, emotional stress, fear, gesture, gesturing, hand, human, human arm, human finger, human hand, human limb, life, male, man, mature adult, old, older, sad, scar, senior men, sign, skin, stress, thumb, white, wrinkled, wrinkles,