Post-Impressionist techniques emerged in the late 19th century as artists sought to move beyond the naturalism of the Impressionist movement. They emphasized personal expression and emotional depth, often using bold colors and distinct brush strokes. Artists like Vincent van Gogh and Paul Cézanne experimented with form and perspective, creating works that conveyed their unique interpretations of reality. Another key aspect of Post-Impressionism was the use of color theory. Artists such as Georges Seurat employed pointillism, applying small dots of color to create vibrant images. This technique allowed for optical mixing, where the viewer's eye blends the colors from a distance, enhancing the overall visual experience.