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Seizure detection of newborn EEG using a model-based approach

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3 Author(s)
Roessgen, M. ; Signal Process. Res. Centre, Queensland Univ. of Technol., Brisbane, Qld., Australia ; Zoubir, A.M. ; Boashash, B.

Seizures are often the first sign of neurological disease or dysfunction in the newborn. However, their clinical manifestation is often subtle, which tends to hinder their diagnosis at the earliest possible time. This represents an undesirable situation since the failure to quickly and accurately diagnose seizure can lead to longer-term brain injury or even death. Here, the authors consider the problem of automatic seizure detection in the neonate based on electroencephalogram (EEG) data. They propose a new approach based on a model for the generation of the EEG, which is derived from the histology and biophysics of a localized portion of the brain. They show that by using this approach, good detection performance of electrographic seizure is possible. The model for seizure is first presented along with an estimator for the model parameters. Then the authors present a seizure-detection scheme based on the model parameter estimates. This scheme is compared with the quadratic detection filter (QDF), and is shown to give superior performance over the latter. This is due to the ability of the model-based detector to account for the variability (nonstationarity) of the EEG by adjusting its parameters appropriately.

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Biomedical Engineering, IEEE Transactions on  (Volume:45 ,  Issue: 6 )