Hi Curiouser,
I'm no Dr. but what you are describing sounds like a possible myoclonic sz. This type of sz. happens right after a person goes to bed or when the first wake up. This has happened to me a few times and brought me right out of a sound sleep. I will start shaking or have muscle spasms in parts of my body and then I blank out not remembering anything until after the sz. is over. I've had an MRI, CT scan, and e.e.g. done but it wasn't until I had the depth electrode e.e.g where the electrodes were placed right on my brain that they were able to find any lesions in my brain and that's because the damage was in so deep. My advice to you is to see an Epileptolgist at an Epilepsy Center instead of seeing a neuro. An Epileptologist specializes in epilepsy and a lot further ahead in understand what type of sz. a person is having a giving the person the least amount of AED's. I wish you the best olf luck and May God Bless You!

Sue