TY - GEN
T1 - Adaptive Walsh estimation of time-varying evoked potential signal
AU - Guo, Xinrong
AU - Thakor, Nitish
PY - 1990/12/1
Y1 - 1990/12/1
N2 - A novel method, the adaptive Walsh function model (WFM), to estimate time-varying evoked potential (EP) signals is presented. Using real EP signals and real noise as inputs to the model, the performances of two models are compared: WFM and Fourier series model (FSM). Both models are used to trace EP signal during experimental and clinical procedures. The results show: (1) both WFM and FSM perform satisfactorily in detecting and tracing time-varying EP signals in high levels of noise; (2) WFM needs less memory and calculations than FSM; (3) for the same adaptive step size, WFM traces faster transients than FSM, but WFM attains lower steady-state signal-to-noise ratio; (4) the WFM and FSM are suitable for the detection of EP signals and other periodic or quasi-periodic signals.
AB - A novel method, the adaptive Walsh function model (WFM), to estimate time-varying evoked potential (EP) signals is presented. Using real EP signals and real noise as inputs to the model, the performances of two models are compared: WFM and Fourier series model (FSM). Both models are used to trace EP signal during experimental and clinical procedures. The results show: (1) both WFM and FSM perform satisfactorily in detecting and tracing time-varying EP signals in high levels of noise; (2) WFM needs less memory and calculations than FSM; (3) for the same adaptive step size, WFM traces faster transients than FSM, but WFM attains lower steady-state signal-to-noise ratio; (4) the WFM and FSM are suitable for the detection of EP signals and other periodic or quasi-periodic signals.
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M3 - Conference contribution
AN - SCOPUS:0025556336
SN - 0879425598
T3 - Proceedings of the Annual Conference on Engineering in Medicine and Biology
SP - 866
EP - 867
BT - Biomedical Engineering Perspectives
PB - Publ by IEEE
T2 - Proceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Y2 - 1 November 1990 through 4 November 1990
ER -