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Autoregressive coefficient changes of EEG signal model

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1 Author(s)
Czinege, L. ; Dept. of Process Control, Tech. Univ. Budapest, Hungary

Clinical records of intraoperative ischemic EEG are used to optimize an automatic detecting algorithm which is capable of signaling the onset of the insult accurately at a small delay. The algorithm derives autoregressive (AR) coefficients on all channels, and searches for simultaneous changes, which has earlier been found to be characteristic of the ischemic change. A set of 32 clinical recordings were used to determine optimal parameter thresholds. An intraoperative clinical monitor based on the present method may be of great help in reducing intervention related risk during carotid and cardiac operations

Published in:

Information Technology Applications in Biomedicine, 1997. ITAB '97., Proceedings of the IEEE Engineering in Medicine and Biology Society Region 8 International Conference

Date of Conference:

7-9 Sep 1997