Electroconvulsive therapy: a model for seizure detection by a wavelet packet algorithm.
Conference Proceedings of the International Conference of IEEE Engineering in Medicine and Biology Society (2007)
- PubMed: 18002357
Available from www.ncbi.nlm.nih.gov
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Abstract
Electroconvulsive therapy (ECT) is an effective treatment for severe depression. In this paper, we have used an algorithm based on wavelet packet (WP) analysis of EEG signals to detect seizures induced by ECT. After determining dominant frequency bands in the ictal period during ECT, the energy ratio of these bands was computed using the corresponding WP coefficients. This ratio was then used as an index to recognize seizure periods. Four different approaches to detect ECT seizures were employed in 41 EEG recordings from nine patients. Sensitivity in ECT seizure detection ranged from 76 to 95% while the false detection rate ranged from 6 to 13.
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