#TRC FILE VIEWER HOW TO#

To convert it to a bipolar montage, we compute the difference between pairs of adjacent contacts. The sEEG recordings are commonly represented and processed as bipolar recordings, but the data is usually acquired using a reference common to all the electrodes. We select the normalized MRI because the coordinates of the SEEG contacts were imported in MNI coordinates. The prefix 'w' indicates this volume in normalized in MNI space.

Select image: tutorial_epimap/anat/MRI/ wBrainPre.nii.

You can display the positions of the contacts:Д¬lick on the button Electrodes. The positions added to the file are in normalized MNI coordinates. This does not produce any new file in output but adds the contacts locations in the SPM.

Select text file for electrode positions: anat/implantation/ Electrodes_Pos_MNI.txt.

Select text file for electrode names: anat/implantation/ Electrodes_Name.txt.

Select menu Import > Electrodes positions: ImaGIN_Electrode.m They are saved in a separate text file that we need to add manually to the SPM. The 3D locations of the sEEG contacts are not available in the. This conversion function assumes the recordings are sEEG recordings with specific nomenclatures: the label of a channel must start with the name of the depth electrode and end with the index of the contact on the electrode (numbering starting from 1).

SZ1_log.txt: Text file that lists the names of the channels that were kept or deleted during this conversion.

SZ1.mat/SZ1.dat: Recordings converted in SPM format.

Note: If you change the current MATLAB directory to tutorial_epimap/seeg/, it would make the file selections easier in the rest of the tutorial as you wouldn't have to change folder every time.Д¬heck in your file explorer the new files that were created for this first seizure: Navigate to the folder tutorial_epimap/seeg/ with the left panel, then click on SZ1.TRC in the right list so it gets selected in the bottom panel, then click.

Select menu Import > Convert: ImaGIN_spm_eeg_converteeg2mat.m Unzip on your computer, rename to 'ImaGIN2' With the interactive interface, we can process the files only one after the other, all the operations illustrated below will have to be repeated three times.

#TRC FILE VIEWER HOW TO#

TRC files into SPM format, then how to process these files in ImaGIN: bad channels, bipolar montage, event managementвЂ¦ We will import three TRC files, corresponding to three seizures of the same patient. This tutorial illustrates how to convert Micromed.

Trc file viewer