Originally posted by Omega Vision
You're thinking about Aquaman's seizure attack all wrong. Its not a mind-blast or anything like that, its more akin to Magneto manipulating the blood in your brain to give you an aneurysm. Feral rage can't compensate for a sudden violent loss of motor control.
It is a derivative of Aquaman's ability to commune with marine life. The trick works by Arthur telepathically communicating with a single isolated part of the brain and telling it what to do. It is the same as any old telepathy just confined to one area and not the entire brain.