CAUTION: THIS EFFECT MAY CAUSE temporary headaches and possibly some minor nausea if stared at too long.
Well, perhaps it won’t cause sickness but it is a great effect for representing vertigo: a balance disorder that causes a spinning sensation. If you are familiar with Alfred Hitchcock’s film “Vertigo”, you will already be familiar with how this visual effect can be used to induce the image of something or someone spinning out of control. With animation, it can also represent time travel or a worm hole or even the beginning of a dream sequence or hallucination.
1 The success of this effect is in the one single graphic: the spiral. ...