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Study on Gastric Interdigestive Pressure Activity Based on Phase Space Reconstruction and FastICA
Huang Biao * #,Yan Guozheng,Zan Peng,Li Qianru
Shanghai Jiaotong University
*Correspondence author
#Submitted by
Subject:
Funding: 国家863,教育部博士点基金（No.2006AA04Z368,20040248033）
Opened online:20 March 2008
Accepted by: none
Citation: Huang Biao,Yan Guozheng,Zan Peng.Study on Gastric Interdigestive Pressure Activity Based on Phase Space Reconstruction and FastICA[OL]. [20 March 2008] http://en.paper.edu.cn/en_releasepaper/content/19493
 
 
Pressure activity data which are an important index of gastric motility can be obtained from the wireless radiotelemetry capsule. But the capsule only records single-dimensional pressure time series which may contain a few interdependent components simultaneously. Automated embedding phase space reconstruction algorithm is employed to reconstruct multi-dimensional phase space. Then the dominant and separated component of the gastric contractions is identified using FastICA algorithm. Finally the use of Hilbert Huang transform method for analyzing the characters of gastric motility is investigated. The results show that the proposed method is an effective approach for the analysis of the gastric pressure series.
Keywords:radiotelemetry capsule, gastric motility, phase space reconstruction, FastICA algorithm
 
 
 

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