Ключевые слова: anatomy, brain, concept, continuous, creative, doodle, draw, drawing, drawn, element, engrave, engraved, engraver, etching, genius, graphic, grunge, hand, head, hemisphere, human, icon, idea, illustrated, illustration, intellect, intelligence, isolated, knowledge, line, linear, medical, memory, mind, minimalist, neurology, old, organ, outline, psychology, retro, science, sign, simple, sketch, symbol, think, thinking, vintage,