Use mne.viz.plot_compare_evokeds() to compare each channel of two conditions

Support & Discussions
1
  • MNE version: 1.1
  • operating system: Windows 10

Hi! I’m using the mne.viz.plot_compare_evokeds() to compare two conditions with each other. I’m interested in comparing two individual channels, but I haven’t found a way to compare two individual channels under two different conditions using this function. The closest I got was setting axes=‘topo’, but this just plots the channels in separate figures. I would like to get everything in one plot. I suppose I could do something with the “combine” parameter, but except for different ways of combining channels, I haven’t found a way to specify that I don’t want to combine the channels.

In short, is there a way to compare two channels across two conditions?

Thanks!

2

that function does not currently support plotting multiple channels per condition. If you’re familiar with Seaborn, that might work. You could to evoked.to_data_frame(long_format=True) on the evokeds for each condition, combine the dataframes with pd.concat([df1, df2]), filter it to just the 2 channels you care about using dataframe.loc[...], and then use sns.lineplot(..., hue='condition', size='channel') for example.