2D Layout for 2 conditions

Discussions
1

Hello Francois!

I have a question about visualisation features in BST : is it possible to overlay two 2D layout view for two different signals (as it is possible with cluster manipulation) such that the result would give something similar to the snapshot attached?

Thanks!

AnneSo and Cristina

2

No, I’m sorry. It’s already in the todo list:
http://neuroimage.usc.edu/brainstorm/Next#Recordings
I hope I’ll have time to work on the 2D displays later this year (summer or fall).

3

Hi François,
we wish to do the same thing here: we would like to plot 2 conditions in the same 2D Layout. So,just to let you know that this option is important ! Many thanks.
Best,
Sophie

4

Hi François,

Same thing here :slight_smile:
I’d be highly interested in this option (in EEG to overlay multiple conditions, and with NIRS data to overlay oxy and deoxy signals).

Many thanks !
Best,

Claire

5

Hopefully we’ll get there at some point…

@MartinC: in case you have some time and are looking for something very graphical to do

6

Guys, thanks for the new option you inserted. 2D layout EEG is fantastic!! Useful specially for ERP visualization with multiple conditions!
There is just one thingh I want to ask you.
When the 2D layout EEG is plotted, for example with two conditions, I would like to select a specific channel, let’s say Cz, by clicking on it for example, in order to visualize better the ERPs of the two conditions just in the channel I selected.
Is there a way to do it?
Thanks

7

No, this is not something I have implemented yet, sorry.
For now, you have to go through the creation of a “cluster”:
https://neuroimage.usc.edu/brainstorm/Tutorials/ChannelClusters#Displaying_clusters

For those who haven’t seen yet what Gian Marco is talking about:
https://neuroimage.usc.edu/brainstorm/Tutorials/ExploreRecordings#A2D_Layout

8

Hi @Francois,

I am using BST to analyze cortical activation in infants during auditory stimulation (blocks). I have 61 subjects and created an “AvgStd” file with the average variation of Hbo, HbR and HbT per subject. I created “2D Layout” images to view the average of the channels.

However, I cannot make comparisons between the subjects’ files (visually) since I cannot standardize the scale. In “2D Layout” I cannot identify the amplitude of the graphs because the information remains “Max amplitude: 0mmol/l” even when I change the amplitude.

I wonder if you can help me, and I apologize for this basic question.

Many thanks !

Best,

Gabriela

9

Thanks for reporting this bug.
I tried to fix it with this commit:
https://github.com/brainstorm-tools/brainstorm3/commit/b8106861c6035e4f0152985aa0657d9f75683ec8
Please update Brainstorm and try again.

10

Hi Francois,
I am Oscar, living in China and sometimes I could not open the github. Now that I have the same question, that I couldnot make comparisons between the groups’ files (visually) since I cannot standardize the scale. I have noticed that the latest reply was in May 20, and that I am now using the brainstorm_230828. So could I use some more input parameter that I can standardize the scale for these three files?

[hFig, iDS, iFig] = view_topography(MultiDataFiles, Modality, '2DLayout')

sFiles = {...
\data_0001.mat', ...
'data_0002.mat', ...
'data_0003.mat'};
[hFig, iDS, iFig] = view_topography(sFiles, 'EEG', '2DLayout');

11

Hi Oscar,

When overlaying plots in a 2D layout figure, all the signals have use the same scale.
If you need different scaling for each file you could use a process such as Standardize > Baseline normalization