Magnetogastrography is a big way of saying "looking at your tummy with magnets and making pictures of what's happening inside."
Your tummy is full of muscles that help push your food around to help it get digested. These muscles make tiny electrical signals like little whispers that tell the food to move in a certain way.
Magnetogastrography uses magnets to detect these whispers and take pictures of them. Scientists put a special jacket on you and pop in some magnets to see what is going on inside your tummy. Then, they use a special machine to read the signals that the magnets are getting and create pictures that show how your tummy muscles are moving.
This is really helpful for doctors because they can see how well your tummy is working and figure out how to help you feel better if you have tummy problems. All in all, it's a really cool technology that helps us learn more about our bodies!