Wavelet analysis of evoked potentials

N. V. Thakor, H. Rix, P. Caminal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Ischemic neurological injury has been shown to alter the temporal and spectral features of somatosensory evoked potentials. Multiresolution wavelet analysis is employed in this study to quantitate such injury-related changes. EP signals are decomposed into constituent 'coarse' and 'detail' components. In the frequency domain, these components correspond to the lowpass filtered and bandpass filtered signals, respectively. Somatosensory evoked potentials recorded during acute cerebral hypoxia and during subsequent recovery are analyzed. Changes in the shape of the coarse components are shown to be sensitive indicators of ischemia. Amplitude trends of the coarse and the detail components are also shown to follow the ischemic event and subsequent recovery.

Original languageEnglish (US)
Title of host publicationProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
EditorsJean Pierre Morucci, Robert Plonsey, Swamy Laxminarayan, Jean Louis Coatrieux
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2446-2447
Number of pages2
ISBN (Electronic)0780307852
DOIs
StatePublished - Jan 1 1992
Event14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992 - Paris, France
Duration: Oct 29 1992Nov 1 1992

Publication series

NameProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
Volume6
ISSN (Print)1557-170X

Conference

Conference14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
CountryFrance
CityParis
Period10/29/9211/1/92

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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