This study investigates the effects of a Gastric Electric Stimulator (GES) on symptoms of gastroparesis, which include nausea and vomiting. Gastroparesis is a condition where the stomach cannot empty food properly due to nerve or muscle problems. The study aims to see if the GES can influence the vagus nerve, which is important for controlling stomach movements.

Participants will have their GES device programmed to test different electrical signals. The study will compare the results of these programmed signals to see if they improve symptoms better than the usual adjustments made to the device.

• Who can participate: Adults diagnosed with gastroparesis who already have a GES device implanted and experience more than mild nausea and vomiting can participate. Pregnant individuals and those with allergies to EKG lead adhesives are excluded.
• Study details: Participants will undergo programming of their existing GES device to test different settings. The study will involve monitoring the effects of these settings on their symptoms.