TY - GEN
T1 - Wavelet analysis of evoked potentials
AU - Thakor, N. V.
AU - Rix, H.
AU - Caminal, P.
N1 - Funding Information:
This research was supported by a grant NS24282 from the NIH, and CGR 900058 from NATO. We also thank D. Hanley, G. Xin-rong, and S. Yi-chun for their co-operation.
Publisher Copyright:
© 1992 IEEE.
PY - 1992
Y1 - 1992
N2 - 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.
AB - 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.
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U2 - 10.1109/IEMBS.1992.5761533
DO - 10.1109/IEMBS.1992.5761533
M3 - Conference contribution
AN - SCOPUS:6844265279
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 2446
EP - 2447
BT - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
A2 - Morucci, Jean Pierre
A2 - Plonsey, Robert
A2 - Laxminarayan, Swamy
A2 - Coatrieux, Jean Louis
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
Y2 - 29 October 1992 through 1 November 1992
ER -