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Epileptic seizure prediction based on features extracted from lagged Poincaré plots
Soroor Behbahani1, Nader Jafarnia Dabanloo2, Ali Motie Nasrabadi3
1School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Queensland, Australia.
Objective:
The present work proposes a new epileptic seizure prediction method based on lagged Poincaré plot analysis of heart rate (HR).
Methods:
In this article, the Poincaré plots with six different lags (1-6) were constructed for four episodes of heart rate variability (HRV) before the seizures. Moreover, two features were extracted based on lagged Poincare plots, which include the angle between the time series and the ellipse density fitted to the RR points.
Results:
The proposed method was applied to 16 epileptic patients with 170 seizures. The results included sensitivity of 80.42% for the angle feature and 75.19% for the density feature. The false-positive rate was 0.15/Hr, which indicates that the system has superiority over the random predictor.
Conclusion:
The proposed HRV-based epileptic seizure prediction method has the potential to be used in daily life because HR can be measured easily by using a wearable sensor.
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