Hi Sara,

The wada test will show what side of the brain is used for memory as Darlene metioned and it also will show what area of the brain you are using for speech. Most of the time it's done before brain surgery but if you have this test done your neuro will be able to tell what's causing your seizures.
For yrs. they always thought the my seizures came from lack of oxygen at birth but the wada test showed that what really caused my seizures was trauma that my mom went through when she was 4 months pregnant for me and my grandfather passed away. That trauma caused to many brain cells on the right temporal lobe and in turn I had a scar from it and by the age of 10 the seizures started. The only other test you could have done is a veeg where they do surgery and put the depth electrodes directly on the brain by doing this they may be able to pick up and pinpoint the area of your brain that's triggering your seizures.
I wish you the best of luck and May God Bless You!

Sue