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<p style="margin-top:0; margin-bottom:0">Hello,</p>
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<p style="margin-top:0; margin-bottom:0">I am fairly new to EEGLab and I had a question concerning the deconstruction of my EEG signal into its alpha/beta/theta/delta sub-components:</p>
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<p style="margin-top:0; margin-bottom:0">After pre-processing some subjects with EEG data from 128 channels and performing ICA (using runica), I used eeglab and chronux to plot the power/frequency and frequency/time spectrograms of several epochs of interest. </p>
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<p style="margin-top:0; margin-bottom:0">Is there a way to extract the alpha/beta/theta/delta frequencies of those epochs and quantify when they occur in time? I can visualize when each type of neuronal oscillation occurs by looking at the overall frequency/time spectrogram,
but I was wondering whether there was a more robust way to actually plot each type of oscillation separately and/or quantify when it occurs.</p>
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<p style="margin-top:0; margin-bottom:0">Would I just need to bandpass filter my post-processed EEG signal to each frequency range of interest (i.e., alpha: 8-12Hz etc) and then plot the remaining EEG signal over time, or is there another way to do this?</p>
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<p style="margin-top:0; margin-bottom:0">Thank you in advance!</p>
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<p style="margin-top:0; margin-bottom:0">Best,</p>
<p style="margin-top:0; margin-bottom:0">Panos</p>
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