Forum Replies Created
November 2, 2018 at 9:16 am #23870
Thank you for using Braph. I hope that it will be a useful tool during your research.
You cannot load the correlation matrices in the current version of the software. However, with a minor modification of the software you can adapt it so that it can accepted matrices calculated from external sources.
We discussed this problem previously on this forum, and I provided a series of steps that will accomplish your purpose. You can find the detailed explanation at: http://braph.org/forums/topic/eeg-graph-analysis/.
I hope that this works. If there is anything additional I can do for you, please do not hesitate to ask.
MiteApril 17, 2018 at 10:11 am #21839
Thank you for using Braph. I hope it will prove to be a useful tool and very helpful for your research.
I checked the issue you were having and it originated from a small mistake into the AAL90.xlsx file. Therefore, the problem was due to the particular file and not in Braph.
If you would like to use the same AAL90 brain atlas, you could import it from the corresponding AAL90.txt file (I checked it and this works fine).
We will try to correct the mistake in the AAL90.xlsx and upload it on the website.
Hopefully, this solve your problem. However, if you need any further assistance, please do not hesitate to contact me.
MiteApril 17, 2018 at 9:53 am #21838
Thank you for your kind thoughts. I hope that using Braph will prove beneficial for you and will help you conducting your research.
From what I understood, you have the same brain atlas for all patients, however due to process you perform, not all brain regions have time series with equal length.
However, could you please further explain whether you observe one of the following:
1) Does the scan of an individual patient results in time series that vary from region to region?
2) Or alternatively, do all brain regions in a single patient have time series with the same length, and, instead the length of the time series is different only for different patients?
I have done few preliminary trials, and I believe that the problem you are experiencing is not due to the odd number of time series points. Instead, Braph automatically fills the empty spaces in the shorter time series in order to make them of equal length and then execute the code for the calculation of the adjacency matrix.
I was wondering whether you would be able to send me a sample of your data, with only few patients that exemplify your problem. Then, I could consult with my colleagues and we will try to make the necessary adjustments to the code so that it performs the correct analysis for you.
I hope that this helps you. If you have any further questions, I will be glad to help.