System and method for analyzing electrogastrophic signal
First Claim
1. A method of analyzing an electrogastrophic (EGG) signal, comprising the steps of:
- placing electrodes on abdominal skin of a subject adjacent a stomach thereof, the stomach producing the EGG signal;
obtaining the produced EGG signal by way of the electrodes;
amplifying the obtained EGG signal by way of an amplifier; and
transforming the amplified EGG signal from a time domain representation to a frequency domain representation by way of a predetermined transform function incorporating a variable frequency and a window function having a time resolution and a frequency resolution, the frequency resolution of the window function being proportional to the frequency, the time resolution of the window function varying 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.
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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.
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Citations
14 Claims
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1. A method of analyzing an electrogastrophic (EGG) signal, comprising the steps of:
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placing electrodes on abdominal skin of a subject adjacent a stomach thereof, the stomach producing the EGG signal; obtaining the produced EGG signal by way of the electrodes; amplifying the obtained EGG signal by way of an amplifier; and transforming the amplified EGG signal from a time domain representation to a frequency domain representation by way of a predetermined transform function incorporating a variable frequency and a window function having a time resolution and a frequency resolution, the frequency resolution of the window function being proportional to the frequency, the time resolution of the window function varying 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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for analyzing an electrogastrophic (EGG) signal, comprising:
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electrodes adapted to be positioned on abdominal skin of a subject adjacent a stomach thereof, the stomach producing the EGG signal, the electrodes for obtaining the produced EGG signal; an amplifier connected to the electrodes for receiving the obtained EGG signals, the amplifier for amplifying the obtained EGG signal; and a transforming device operatively connected to the amplifier for receiving the amplified EGG signal, the transforming device for transforming the amplified EGG signal from a time domain representation to a frequency domain representation by way of a predetermined transform function incorporating a variable frequency and a window function having a time resolution and a frequency resolution, the frequency resolution of the window function being proportional to the frequency, the time resolution of the window function varying 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. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification