Thank you for writing to us.
You are most likely having what is called as hypnic jerks.
These are a form of myoclonic jerks that happen when one is asleep.
This is something that is normal and nothing to worry about a great deal.
In fact this is something that is very common and even I experience them myself.
The findings that you are having on your MRI
is not something that concerns me and this should not be causing you the myoclonic jerks by any stretch of the imagination.
Therefore I would recommend that you should just relax as there is nothing a great deal to worry about.
Dr. Zia. MD.