Estimation of Intracerebral Electric Current Sources of Photoparoxysmal Responses by Dipole Tracing Method Using Three-layered Head Model

Abstract

he dipole tracing method using three-layered head model was applied for estimating the electric current sources of photoparoxysmal responses in two children with idiopathic localization-related epilepsies and without visually induced clinical seizures.We investigated each photoparoxysmal response divided into two or three parts, preceding spike part, diffuse wave, and diffuse spike part.The dipole of preceding spikes in photoparoxysmal responses was anatomically estimated in the area related to each clinical feature of complex partial seizures.But the dipoles of diffuse spikes in photoparoxysmal responses were not detected stably.