Farklı Dalgacık Dönüşümü Türleri Kullanılarak COVID-19’un Olay İlişkili P300 Potansiyeli Üzerindeki Etkisinin İncelenmesi

Yıl 2023, Cilt: 28 Sayı: 2, 533 - 543, 31.08.2023

Onur Erdem Korkmaz

https://doi.org/10.53433/yyufbed.1212844

Öz

COVID-19’un nörolojik ve mikrovasküler sistem üzerinde etkileri bulunmaktadır. Bu bilgiden hareketle bu çalışmada COVID-19 öncesi ve COVID-19 sonrası aynı kişiler ve aynı deney prosedürüyle kaydedilmiş EEG sinyallerinden elde edilen olay ilişkili potansiyeller karşılaştırılmıştır. Farklı dalgacık dönüşümü türleri kullanılarak elde edilen spektrogram görüntüleri Cz, P3, P4, Pz, P7, P8, O1, Oz ve O2 kanalları kullanılarak COVID-19 öncesi ve COVID-19 sonrası durumları karşılaştırılmıştır. Sonuçlar incelendiğinde, 4 Hz frekans bölgesi ve 100 ile 300 ms zaman bölgesi arasında Oz, P8, P7 ve P4 elektrotlarında bir aktivasyon azalmasının meydana geldiği görülmektedir. Farklılığın daha net ortaya konulabilmesi için, farklı dalgacık türleri kullanılarak elde edilen güç katsayısı değerleri karşılaştırılmıştır. COVID-19 sonrası en büyük azalma oranı %16.10 ile bump dalgacık türünde meydana gelmiştir. Morse ve amor dalgacık türleri içinse sırasıyla %14.22 ve %14.25’lik dalgacık dönüşümü katsayısı güç azalması meydana gelmiştir. Kanallar açısından en büyük farklılık Oz kanalında meydana gelmiştir.

Anahtar Kelimeler

Beyin-bilgisayar arayüzü, COVID-19, Dalgacık dönüşümü, EEG

Destekleyen Kurum

Atatürk Üniversitesi

Proje Numarası

FOA-2018-6524

Teşekkür

Bu çalışma Atatürk Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi tarafından FOA-2018-6524 proje numarası ile desteklenmiştir.

Investigation of the Effect of COVID-19 on Event-Related P300 Potential Using Different Types of Wavelet Transforms

Öz

COVID-19 has effects on the neurological and microvascular systems. Based on this information, in this study, event-related potentials were compared from EEG signals recorded by the same people and the same experimental procedure before and after COVID-19. The spectrogram images obtained using different wavelet transform types were compared using the Cz, P3, P4, Pz, P7, P8, O1, Oz, and O2 channels before and after COVID-19. When the results are examined, it is seen that there is a decrease in activation in the Oz, P8, P7, and P4 electrodes between the 4 Hz frequency region and the 100 to 300 ms time region. In order to reveal the difference more clearly, the power coefficient values obtained by using different wavelet types were compared. The most significant reduction rate after COVID-19 occurred in the bump wavelet type, with 16.10%. For Morse and amor wavelet types, wavelet transform coefficient power reduction of 14.22% and 14.25%, respectively, occurred. The most significant difference in terms of channels occurred in the Oz channel.

Anahtar Kelimeler

Brain-computer interface, COVID-19, EEG, Wavelet transform

Proje Numarası

FOA-2018-6524

Kaynakça

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