Characterization of Gastric Evoked Potentials

"The best location for evoking an electromyographic (EMG) response of the first dorsal interosseus (FDI) muscle in the dominant hand and the minimum stimulation intensity required to evoke a certain EMG response amplitude (Motor Threshold, MT) are used as reference to determine the best location and stimulation parameters to evoke GEPs.~After identification of the GEP hot-spot, a water load test is administered to determine whether satiety shapes GEP responses.~In subsequent study visits, the water load test is preceded by application of neuromodulatory repetitive TMS (rTMS), targeted to the GEP hotspot."