Terry Martin, who himself has epilepsy has recently published a book that has a protagonist with  the condition and in it gives an account from the mind of a secondary generalized seizure.

He is donating half the proceeds from his personal copies to Epilepsy Research UK and
all copies sold will be signed and personalised. You can find the book on Amazon here: http://www.amazon.co.uk/Turtles-The-Beach-Terry-Martin/dp/1909421537

We thank Terry for all his support.