Spectral investigations of intraluminal impedance signals.
In this paper, an investigation of the spectral characteristics of intraluminal impedance signals using local Hilbert-Huang transform is presented. The impedance waveform may contain three main events: reflux event, swallow event and baseline region corresponding to no activity. The three events are analysed using local Hilbert-Huang transform to characterize the frequency contents of each event. In addition to the results of the Hilbert-Huang transform a time domain description of each event is presented.
Al-Zaben
A
A
Biomedical Systems and Medical Informatics Department, Hijjawi Faculty for Engineering Technology, Yarmouk University, Irbid-Jordan. azaben@yu.edu.jo
Al-Zaatreh
N
N
Al-Quran
H
H
D001698:Biomedical Engineering; D003679:Deglutition / Q000502:physiology; D017097:Electric Impedance; D005764:Gastroesophageal Reflux / Q000175:diagnosis; D005772:Gastrointestinal Transit / Q000502:physiology; D006801:Humans; D008954:Models, Biological; D012815:Signal Processing, Computer-Assisted