Running spectrum analysis as an aid in the representation and interpretation of electrogastrographic signals
Running spectrum analysis as an aid in the representation and interpretation of electrogastrographic signals
复制标题
运行频谱分析以帮助表示和解释胃电图信号
DOI：
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发表时间：
2006
影响因子：
3.2
通讯作者：
J. Grashuis
中科院分区：
文献类型：
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作者：
Dr. E. J. van der Schee;J. Grashuis
通过附着在腹壁上的皮肤电极记录胃肌电活动被称为胃电描记术。呼吸和运动伪影妨碍了胃电信号的解释。运行频谱分析，使用快速傅立叶变换，似乎提供了一个简洁的频谱表示的胃电数据。本文详细地介绍了利用由调频正弦波和人、狗的实际记录组成的测试信号进行频谱分析的概念，特别强调和讨论了在适当的图中的直观可解释的表示。它表明，tachygastrias与持续时间的顺序为30秒，可以很容易地识别的光谱。在大多数情况下，可以在频谱中识别胃频率。因此，运行频谱分析被认为是一种有吸引力的非侵入性的方法来研究胃肌电活动在狗和人。
The recording of gastric myoelectrical activity by means of cutaneous electrodes attached to the external abdominal wall is termed electrogastrography. Respiration and motion artefacts hamper the interpretation of electrogastrographic signals. Running spectrum analysis, using the fast Fourier transform, seems to provide a concise spectral representation of electrogastrographic data. In this paper the concept of running spectrum analysis is presented in detail using test signals consisting of frequency modulated sine waves and actual recordings from dog and man. Especially the visual interpretable representation in appropriate plots is emphasised and discussed. It is demonstrated that tachygastrias with a duration of the order of 30s can easily be recognised in the spectra. In most cases the gastric frequency can be recognised in the spectra. It is concluded, therefore, that running spectrum analysis has to be considered an attractive noninvasive method to study gastric myoelectrical activity in dog and man.