| Time-varying adaptive filters for evoked potential estimation. | |
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MedLine Citation:
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PMID: 8001995 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Adaptive implementation of an optimal time-varying filter (TVF) for evoked potential (EP) estimation is addressed in this paper. A data-adaptive scheme is used, which converges asymptotically to the optimal TVF solution. Two basic adaptive TVF's (ATVF's) are first introduced, namely least mean square (LMS) ATVF and recursive least-squares (RLS) ATVF. The latter converges much faster than the former. Since the basic ATVF's usually require a relatively large set of response trials to get a meaningful solution, a reduced-order ATVF is further presented and the corresponding LMS and RLS (including a fast RLS) adaptive algorithms are developed. To save memory, a truncated Fourier expansion is suggested to express approximately the time-sequenced weight-vectors of the ATVF's, resulting in a simplified reduced-order ATVF. Finally, extensive simulations are provided to confirm the superior performance of the ATVF's. The present ATVF's can be used as prefilters for latency-corrected average (LCA) processing to obtain more informative estimates of EP signals. |
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Authors:
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X H Yu; Z Y He; Y S Zhang |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: IEEE transactions on bio-medical engineering Volume: 41 ISSN: 0018-9294 ISO Abbreviation: IEEE Trans Biomed Eng Publication Date: 1994 Nov |
Date Detail:
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Created Date: 1995-01-26 Completed Date: 1995-01-26 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0012737 Medline TA: IEEE Trans Biomed Eng Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1062-71 Citation Subset: IM |
Affiliation:
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Department of Radio Engineering, Southeast University, Nanjing, P. R. China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Algorithms Computer Simulation Electroencephalography Evoked Potentials, Auditory* Female Fourier Analysis Humans Least-Squares Analysis Male Middle Aged Models, Biological Signal Processing, Computer-Assisted* Time Factors Vestibulocochlear Nerve / physiology |
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