Never tried either of them, but MRI shouldn't really stimulate your brain, or interfere with electrical activity. Surely not to the level of TMS.
Having to lie completely still for hours with a constant plain and repeating sound in the background definitely stimulates some part of your brain.
No but i “felt” the effects of it but its hard to describe. it was pretty mild though but enough to dispel the idea i had that those 20 minutes would be meditation time!
Of course anecdotal and the effect might have been from the noise or vibration
Do you consider these effects you felt to be good? I didn't catch if it is a good or bad experience
Slightly bad, but we are talking slightly uncomfortable. Much less than a headache.