Publication: EEG Sinyalinin Anestezi Sırasındaki
Topografik ve Zamansal İzge Analizi
No Thumbnail Available
Date
2018
Authors
Uslu, Atilla
Cebeci, Bora
Erdoğan, Ezgi T.
Kaşıkçı, Itır
Seyhan, Tülay Ö.
Akan, Aydın
Demiralp, Tamer
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Abstract
Bu çalışmada EEG sinyalinin anestezi altındaki izgesel
değişimi, zamansal ve uzaysal olarak incelenmiştir. Bu amaçla
kullanılan yöntemler arasında, günümüz anestezi derinliği
takip cihazlarının da kullandığı bilinen SEF-90, α-β bandı
güç oranları ve izgesel entropi yer almaktadır. Ayrıca
doğrusal olmayan sistemlerin analizinde kullanılan Higuchi
fraktal boyutu da karşılaştırma olarak incelenmiştir. Uzaysal
analiz sonucunda, normal bireylerde oksipital bölgede
görülen baskın alfa aktivitesinin artan anestezi derinliği ile
frontal bölgeye kaydığı doğrulanmış ve ilgili topografik
gösterimler sunulmuştur.
In this study, we present the spatial and temporal evolution of EEG signal spectrum under anaesthesia. Studied features include SEF-90, α-β power ratios, spectral entropy that are known to be used in commercially available depth of anaesthesia monitors. As an additional and comparing feature, we also present Higuchi fractal dimension that is used for analysis of non-linear systems. By means of spatial analysis, we verified the shift of occipitally dominant alpha activity to frontal regions and demonstrated corresponding topographic plots.
In this study, we present the spatial and temporal evolution of EEG signal spectrum under anaesthesia. Studied features include SEF-90, α-β power ratios, spectral entropy that are known to be used in commercially available depth of anaesthesia monitors. As an additional and comparing feature, we also present Higuchi fractal dimension that is used for analysis of non-linear systems. By means of spatial analysis, we verified the shift of occipitally dominant alpha activity to frontal regions and demonstrated corresponding topographic plots.
Description
Keywords
Spectral analysis, Electroencephalography, electroencephalography, entropy, fractals, medical signal processing, spectral analysis, topographic analysis, temporal spectral analysis, EEG signals, anaesthesia, α-β power ratios, spectral entropy, spatial evolution, temporal evolution, Higuchi fractal dimension, occipitally dominant alpha activity