Surgery – Diagnostic testing – Detecting muscle electrical signal
Patent
1997-03-26
1998-08-18
Getzow, Scott M.
Surgery
Diagnostic testing
Detecting muscle electrical signal
A61B 50488
Patent
active
057953040
ABSTRACT:
A method and system for analyzing an electrogastrophic (EGG) signal are disclosed. Electrodes are positioned on abdominal skin of a subject adjacent a stomach thereof. The electrodes obtain the EGG signal produced by the stomach. An amplifier is connected to the electrodes, receives the obtained EGG signals, and amplifies the obtained EGG signal. A transforming device is operatively connected to the amplifier. The transforming device receives the amplified EGG signal and transforms the amplified EGG signal from a time domain representation to a frequency domain representation. The transformation is accomplished by way of a predetermined transform function incorporating a variable frequency and a window function. The window function has a time resolution and a frequency resolution. The frequency resolution of the window function is proportional to the frequency. The time resolution of the window function varies with the frequency such that the time resolution is relatively narrow when the frequency is relatively high and relatively broad when the frequency is relatively low.
REFERENCES:
patent: 5560370 (1996-10-01), Verrier et al.
patent: 5601088 (1997-02-01), Swanson et al.
Chey William Y.
Lee Kae Yol
Qiao Wen Wei
Sun Hun H.
Drexel University
Getzow Scott M.
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