Review Article

Electrogastrography in Adults and Children: The Strength, Pitfalls, and Clinical Significance of the Cutaneous Recording of the Gastric Electrical Activity

Figure 2

Time signal (bipolar and monopolar time signals, upper and lower, resp.) on the right; Mean Spectrum and Running Spectra Analysis (upper and lower, resp.) on the left. Following Running Spectra Analysis and using Fast-Fourier transform, the frequency components of 256-second (T) epochs of EGG signal were calculated, overlapped by 75%   and displayed as a three-dimensional frequency plot.
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