Review Raw file (import eeg/meg data)

Dear All,

Hope you are well and healthy,

My question today is about the loading eeg/meg data. In BST when we load the data we click Review Raw file and then it imports raw.fif file,
recently I discover that the raw.fif file is not containing the channel (location by it self) but it integrated with coil.def.dat file in BST. My question is how?

Cheers
Abdallah

This has been discussed a few times and is quite advanced and complex topic.
You can search the forum for "coil_def.dat"
https://neuroimage.usc.edu/forums/search?q=coil_def.dat%20order%3Alatest

If you find any topic that matches your interest but does not answer fully your questions, please post them on that thread.
Thanks