EVALUATION of the RELATIONSHIP BETWEEN EEG BAND POWERS and COGNITIVE TASKS

Yıl 2022, Sayı: 051, 240 - 252, 31.12.2022

Evin Şahin Sadık , Hamdi Melih Saraoğlu , Sibel Canbaz Kabay , Cahit Keskinkılıç

Öz

To examine our brain's responses to different cognitive activities, the brain signals of 30 volunteers were evaluated in terms of verbal memory, visual memory, verbal attention, visual attention and mental processing speed cognitive activities by using Electroencephalogram (EEG) signals. The correlation between cognitive activities and EEG signals was analyzed by examining the EEG signals recorded during the resting state of the volunteers and during five different cognitive activities (Öktem Verbal memory test, Wechsler Memory Scale (WMS) visual memory subtest, Digit span test, Corsi block test and Stroop test). The spectral features of four EEG subbands (delta, theta, beta and alpha) were extracted from the EEG signals at rest and from the EEG signals during each cognitive activity using the Welch method. When the extracted features were evaluated statistically using the ANOVA test, it was observed that there were changes in the EEG bands of the volunteers who passed from the resting state to the test state. It was observed that the relative beta values of the volunteers' EEG signals decreased in the Öktem verbal memory processes test and Digit span test, while the relative alpha values decreased during the visual memory, Corsi block and Stroop tests.

Anahtar Kelimeler

ANOVA, Cognitive tasks, EEG band power, Relative alpha, Relative beta.

Destekleyen Kurum

Kütahya Dumlupınar Üniversitesi Bilimsel Araştırma Projeleri Koordinatörlüğü

Proje Numarası

2020/26

Teşekkür

This study was supported by the Scientific Research Projects of Kütahya Dumlupınar University within the scope of the project numbered 2020/26. Also, it was conducted by researchers at Kütahya Dumlupınar University Neurotechnology Education Application and Research Center.

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