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What's Going On?
Three electrodes, just like
they use for an EKG are placed on your midsection. These detect when
your nervous system sends the message to your upper digestive system
to let things into and through your stomach. This is why you are
asked to drink some water during the test.
An elastic band is placed
around your chest with another detector which monitors your
breathing. This allows the doctor to recognize when a change
measured by the other electrodes may have been caused by something
other than digestion; like if you shift position or even ask a
question. This is why you are tested in a comfortable chair, in a
quiet room, and asked to relax quietly during the test! |
