Here's the link in reference to Seizures brought on by sound:

http://www.epilepsyontario.org/clien...genic+Seizures

Musicogenic Seizures

Musicogenic seizures are a reflex epilepsy triggered by certain types of music or even specific frequencies of pitch for which the person's brain has a low threshold or tolerance. These sounds trigger focal epileptiform EEG discharges in cerebral areas specific to the triggering stimulus. This usually results in a complex partial seizure, but may also induce others, such as tonic-clonic seizures.

Musicogenic seizures usually involve a degree of cognitive or emotional appreciation of the stimulus. In some cases, merely thinking of the atmosphere and the emotions associated with a certain stimulus is enough to induce a seizure. They may also occur during sleep.


From the Epilepsy Ontario's website - copy and paste link for more info.