Need help in plotting raw eeg signals using raw.plot()

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1

I am using mne-bids to read my EEG data. When I am doing raw.plot(), I am getting an image of this type, rather than a time series. I am unable to interpret this.

plot
plot576×576 15.6 KB

Whereas I need a plot of this type:

sphx_glr_10_overview_002
sphx_glr_10_overview_002777×473 44.1 KB

  • MNE version: e.g. 0.24.0
  • operating system: Windows 11

Thanks.

2

can you try:

raw.plot(scalings="auto’)

?

Alex

1 Like
3

Thanks for your solution. Now I am getting a plot like this:

plot (1)
plot (1)576×576 94.4 KB

The data is ieeg values for epileptic patients.

4

'auto' sets the scale to match the 99.5th percentile of the data. If that is not good enough, you can provide a scale yourself. See the docstring for argument scalings here.

You can also use the +/- keys on your keyboard to adapt the scale interactively in the ploting window.

1 Like
5

Thanks for the help.

6

Also, it seems like the data is incorrectly scaled, because the plot shows 99070mV. I assume it is stored as µV, but MNE expects signal to be in V. Therefore, you should multiply by 1e-6 after importing.

1 Like
7

Thanks for pointing it out. I was wondering why some values are so high and some very low.