This does not have any movement. the movement you see, when you look at the edges of the picture, is purely the result of tricking your brain. I found this on neatorama, where they explain:
Neatorama reader Walt Anthony shares with us his blog, geared to educate kids about optical illusions. Walt did a good job in explaining the illusions in the post:
Anomalous Motion Optical Illusion aka Peripheral Drift Optical Illusion is characterized by anomalous motion that can be observed in peripheral vision. […]
Keep in mind that this is a static image. It is not animated in any way. but as your vision moves back and forth the center area seems to be moving toward the center (contracting) and the outer edges seem to be moving away (expanding) from the center. Also worth noting is that if you fixate on a point in the center and don’t move your eyes this anomalous motion will stop.
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