SEEG epileptogenicity maps tutorial

I was following the tutorial of " SEEG epileptogenicity maps".
https://neuroimage.usc.edu/brainstorm/Tutorials/Epileptogenicity

I could do steps till "Display the depth electrodes"..
When I do " Panel iEEG", can not see the electrode location map to IEEG signal as showed in the tutorial.

I got stuck here. Pasting the screenshot

Requesting help to resolve this.

We are not able to replicate this issue.

  1. Be sure that you carefully follow the tutorial
  2. Update your Brainstorm version

What does it show if you do the following?

  1. Close all figures with the ( iconDelete ) button on the top right inside the Brainstorm main window.
  2. Double-click on the channel file ( iconChannel )

Dear Cassani,

Thank you for the prompt response.

I found it was a display error. The iEEG electrode displaying window is not expanding properly to view the electrodes.

When I expand the brainstorm main menu window to a full screen then I can see few of them as small icons (green and red).

image

I hope this will help to fix those.

Regards
Hari

I am having the same issues. There are some issues with that tutorial following it through and I wonder if it is an old tutorial with new brainstorm version or something else. The contacts are not available in the iEEG panel despite loading them as provided in the download folder BIDS .tsv file (only shows electrodes). The time-frequency maps do not replicate the images in the tutorial even when following the GIN color maps guidance in the tutorial and max values provided. Even the epileptogenicity map function following the tutorial exactly does not work. I also recall that the time-frequency analysis failed at the baseline normalization step. Can someone from the brainstorm team look and see if they can replicate the tutorial on the new version?

Hi @mubafzal2, be sure that the problem you experience is not related to the size of the GUI as in this post:



The epileptogenicity tutorial has been recently updated to match the current GUI and features.

If you are having other troubles I'd suggest you to create a new thread providing detailed information about the Brainstorm version, the steps that you are getting stuck, obtained results, etc.

Do not hesitate in providing screenshots so we can understand better the situation.


Adding, @chinmay.chinara to the loop


this is on importing the .tsv file from add EEG positions and clicking on any of the electrode.

Thank you so much for the suggestions.

I was progressing with the tutorial.

At the end, there is synchronizing the resampled Onset and threshold EI map.

I could not do/complete Run : Standardize > Interpolation , its giving an error.

Can you pls have a look at this ?

Regards
Hari

What is the error?

Sorry that I missed to paste the error.

Here it is

image

Dear Raymundo.Cassani

Any thought on this ?

@mubafzal2, please be sure that you are using the latest version of Brainstorm

@harilalp, we strongly encourage paying close attention to the tutorial instructions to avoid any issues. The problem you are facing is due to not following the instructions as detailed in the tutorial page: https://neuroimage.usc.edu/brainstorm/Tutorials/Epileptogenicity

  • The instructions for computing the Volume epileptogenicity maps for run01 use only one sample (see this link). While the Surface epileptogenicity maps for run02 and run03 are computed for the time window [0-20s] (see this link).

    As such, the shown error is produced as you try to interpolate a signal (run-01 Onset) of that is defined in the [-10s, 40s] time window, with a source map of one sample.


In addition, other differences between the tutorial steps and the shared DB screenshot:

  • Epileptogenicity maps are compute for Volume in run01, not for Surface as shown the shared screenshot.

  • Frequency band for both epilepogenicity is [120Hz-200Hz], the screenshot shows you are using a the [60Hz-200Hz] range.