Why are so many people drawn to conspiracy theories in times of crisis?
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Excellent question, and the answer is yes! The two artists tested in this study favour one foot for object manipulation and use the other for stabilization. If you watch the videos of Tom Yendell, you'll notice that he's "left-footed" -- his left foot is his dominant or, as the study puts it, his dextrous foot.
Interestingly, the brains of the foot artists have distinct toe maps for both feet, though the maps for stabilizing foot are less pronounced. This is analogous to what we see in the brains of two-handed people, who have finger maps for both hands, even if they primarily use one hand for detailed tasks.
The study's authors suggest that these maps might have developed in early childhood, before the artists had a strong preference for using one foot over the other. In the videos above, though, you'll also see that Yendell uses the toes of his stabilizing foot much more than the average person, too, to lift objects, manipulate the canvas while he's painting, and so forth, much like a right-handed person makes some use of the fingers on their left hand.
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