Pattern adapted wavelet-based seizure prediction

2022 ◽  
pp. 101-123
Author(s):  
Varsha K. Harpale ◽  
Vinayak K. Bairagi
Keyword(s):  
2018 ◽  
Vol 27 (1) ◽  
pp. 53-70
Author(s):  
Ahmed Sedik ◽  
Turky Alotaiby ◽  
Heba El-Khobby ◽  
Mahmoud Atea ◽  
Saleh A. Alshebeili ◽  
...  

2021 ◽  
Vol 1916 (1) ◽  
pp. 012075
Author(s):  
V Seethalakshmi ◽  
P Naveenkumar ◽  
G Kavin Prabu ◽  
S Praveen Kumaar

2020 ◽  
Vol 65 (6) ◽  
pp. 705-720
Author(s):  
Aarti Sharma ◽  
Jaynendra Kumar Rai ◽  
Ravi Prakash Tewari

AbstractEpilepsy is characterized by uncontrollable seizure during which consciousness of patient is disturbed. Prediction of the seizure in advance will increase the remedial possibilities for the patients suffering from epilepsy. An automated system for seizure prediction is important for seizure enactment, prevention of sudden unexpected deaths and to avoid seizure related injuries. This paper proposes the prediction of an upcoming seizure by analyzing the 23 channel non-stationary EEG signal. EEG signal is divided into smaller segments to change it into quasi-stationary data using an overlapping moving window. Brain region is marked into four regions namely left hemisphere, right hemisphere, central region and temporal region to identify the epileptogenic region. The epileptogenic region shows significant variations during pre-ictal state in comparison to the other regions. So, seizure prediction is carried out by analyzing EEG signals from this region. Seizure prediction is proposed using features extracted from both time and frequency domain. Relative entropy and relative energy are extracted from wavelet transform and Pearson correlation coefficient is obtained from time domain EEG signal. Extracted features have been smoothened using moving average filter. First order derivative of relative features have been used to normalize the intervariability before deciding the threshold for marking the prediction of seizure. Isolated seizures where pre-ictal duration of more than 1 h is reported has been detected with an accuracy of 92.18% with precursory warning 18 min in advance and seizure confirmation 12 min in advance. An overall accuracy of 83.33% with false positive alarm rate of 0.01/h has been obtained for all seizure cases with average prediction time of 9.9 min.


Author(s):  
Abhijeet Bhattacharya ◽  
Tanmay Baweja ◽  
S. P. K. Karri

The electroencephalogram (EEG) is the most promising and efficient technique to study epilepsy and record all the electrical activity going in our brain. Automated screening of epilepsy through data-driven algorithms reduces the manual workload of doctors to diagnose epilepsy. New algorithms are biased either towards signal processing or deep learning, which holds subjective advantages and disadvantages. The proposed pipeline is an end-to-end automated seizure prediction framework with a Fourier transform feature extraction and deep learning-based transformer model, a blend of signal processing and deep learning — this imbibes the potential features to automatically identify the attentive regions in EEG signals for effective screening. The proposed pipeline has demonstrated superior performance on the benchmark dataset with average sensitivity and false-positive rate per hour (FPR/h) as 98.46%, 94.83% and 0.12439, 0, respectively. The proposed work shows great results on the benchmark datasets and a big potential for clinics as a support system with medical experts monitoring the patients.


Brain ◽  
2016 ◽  
Vol 139 (6) ◽  
pp. 1625-1627 ◽  
Author(s):  
Florian Mormann ◽  
Ralph G. Andrzejak
Keyword(s):  

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