Motion in Hokusai drawings

At Neurophilosophy, on how Japanese printmaker Katsushika Hokusai created a sense of motion in his manga: "The simple line drawings in his Manga strips lack all of the commonly-used motion effects, yet give a strong impression of movement by depicting the human body in highly unstable postures. As a new study just published in the journal NeuroReport shows, the figures in the sketches are perceived to be moving because their gravity-defying postures activate regions of the visual cortex that are sensitive to motion."