Output files from mq_con2fif_maxfilter.py

[JD-Zhu]

Hi Robert,

I just tried out this new version :) It produces two output files: _raw_tsss.fif _raw_tsss-1.fif

Just wondering what is the difference between these two files, and which one should we use? The "_raw_tsss-1.fif" seems to have a much smaller file size.

Thanks, Judy

[JD-Zhu]

An additional question: When reference sensor data are available, should noise reduction (CALM/TSPCA) be performed prior to tSSS?

Thanks, Judy

[JD-Zhu]

Ok, I can now answer the first question. The dataset was split into 2 output files because it was too large (this happens when the recording length exceeds 35 minutes). We just need to join the 2 output files together.

Hi Robert,

I just tried out this new version :) It produces two output files: _raw_tsss.fif _raw_tsss-1.fif

Just wondering what is the difference between these two files, and which one should we use? The "_raw_tsss-1.fif" seems to have a much smaller file size.

Thanks, Judy

[neurofractal]

Ok, I can now answer the first question. The dataset was split into 2 output files because it was too large (this happens when the recording length exceeds 35 minutes). We just need to join the 2 output files together.

Hi Robert, I just tried out this new version :) It produces two output files: _raw_tsss.fif _raw_tsss-1.fif Just wondering what is the difference between these two files, and which one should we use? The "_raw_tsss-1.fif" seems to have a much smaller file size. Thanks, Judy

Indeed - maximum size of .fif files are 2GB I believe.

An additional question: When reference sensor data are available, should noise reduction (CALM/TSPCA) be performed prior to tSSS?

Mmm good question. I wouldn't use them together for the same dataset.

• tSSS needs be performed on raw data, for spherical harmonic functions to be valid

• But alternatively using CALM/TSPCA after tSSS, I also don't think it makes sense to project components out of your data which have been already removed by tSSS.

Thoughts @paulsowman ?