Hermann Grid Optical Illusion T-Shirt

The cliche says what you see is what you get, but sometimes what you see isn’t even there. In this scintillating grid variation of the Hermann grid illusion, opposite-coloured dots seem to flash inside the actual dots as you move your gaze across the grid. The jury is still out on just what neural idiosyncrasy causes this effect. You can do your own experiments in the budding field of tee-based science by wearing this t shirt and using other people as test subjects. Obtain a willing friend. If that’s a stumbling block, rest assured they don’t have to be an actual friend, they just can’t be blind. In any case, assuming you have someone looking at you, without warning or preface begin to move your torso in a circular or swaying and slightly jerky motion and ask if they notice anything strange. Answers may vary. It’s not every day a tee shirt is a perfectly justifiable use of your lab’s grant money. Make other products, too! Explore your gift-giving options for this fun optical illusion.