I am trying to plot the signal , raw eeg data . [image] but I got this figure : what does it means? and why I did not get the whole signals ? [image]

You can try raw_01.plot(scalings="auto"). Do you see a trace now?

[image] richard: raw_01.plot(scalings="auto") yes , thank you so much !!

I assume the scaling of your data is incorrect, then. You should check that before proceeding. MNE expects EEG data in Volts (not µV). Good luck, Richard

what is the interpretion of this figure

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what is the interpretion of this figure

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