EEGLAB "pop_eeg_s​pektrine_g​alia"

When saving in the eeglab darbeliai "pop_eeg_spektrine_galia" section, there is absolute power and relational power. I am curious about the difference between them, and whether fft is applied and saved.

Answer 1

[Angelo Yeo]

Although EEGLAB is not an "official" toolbox from MathWorks, I will be sharing my opinion based on my previous experiences on EEG research. In EEG research, "relative power" may refer to the proportion of the signal strength in a specific frequency band relative to the total power across all frequency bands.. For example, if the total power across all frequency bands is 200 µV² and the power in the alpha band is 50 µV², the relative power for the alpha band would be 25%.

You may want to refer to the Darbeliai's doc: 3.6. Spectral power · embar-/eeglab_darbeliai Wiki. Or you may ask SCCN for a detailed questions: Support - EEGLAB Wiki.