Analyses of different types of EEG electrodes

Završni rad opisuje sve potrebne komponente za snimanje EEG signala. Srž ovog rada obuhvaća opis i analizu pojedinačnog sustava elektroda koji su popraćeni raznim slikama, kao bitan segment svih metoda snimanja moždanih signala. Priloženo je i poglavlje s usporedbom razine signala i frekvencijskog spektra signala dobivenih s vlažnom i aktivnom elektrodom. U daljnjoj analizi obrađeni su signali s tri sonde, dvije aktivne elektrode i jedna vlažna. Nakon filtriranja signala i izvršene brze fourierove transformacije, analizirane su relativne snage u frekvencijskom području. Konačno, vremenski profili snaga prikazani su za svako interesno područje (theta, alfa i beta). Prethodno opisana analiza, provedena je pomoću programa Matlab.This work describes all the necessary components for recording an EEG signal. The core of this work is the description and analysis of an individual electrode system, accompanied by various images, as an essential segment of all methods of recording brain signals. Also included is a chapter comparing the signal level and frequency spectrum of the signals obtained with the wet and active electrode. In the further analysis, signals were processed with three probes, two active electrodes and one wet. After filtering the signal and executing a fast Fourier transform, the relative strengths in the frequency range were analyzed. Finally, temporal power profiles are shown for each area of interest (theta, alpha, and beta). The analysis was performed using Matla