People speak of their own experiences:
“The best way I can describe it is that it was like watching television in your mind.”
I bet you won’t be surprised to hear that epilepsy is most often depicted in sci-fi and horror films.
Just think of “The Andromeda Strain”, “Crazed”, “Deadwood”, “The Exorcist”, “The Exorcism of Emily Rose”, “Frankenstein”, “The Garden State”, “Lighthouse” and “The Terminal Man” to name a few.
DEMONIC = EPILEPTIC!