mri?

so i'm at my own place again and i'm thinking about the eeg i was supposed to take and couldn't because i couldn't fall asleep, it sounds so easy.. fall asleep and the doctors can monitor brain function or somethin like that but i couldn't fall asleep when i need to but i couldn't fall asleep and i had been up since 2 am that morning. i don't know if mri's can monitor if your brain functioning is progressing or not but i hope so because i took one of those also on friday. i can't remember if i already wrote about this on here.. sorry if i did, it's just what i'm recently thinking about at the moment.