The procedure that calculates the electrical potential over the scalp.
Published in Chapter:
Source Localization of Subtopographic Brain Maps for Event Related Potentials (ERP)
Adil Deniz Duru (Bogazici University, Turkey), Ali Bayram (Bogazici University, Turkey), Tamer Demiralp (Istanbul Medical Faculty, Turkey), and Ahmet Ademoglu (Bogazici University, Turkey)
Copyright: © 2008
|Pages: 6
DOI: 10.4018/978-1-59904-889-5.ch156
Abstract
Event-related potentials (ERP) are transient brain responses to cognitive stimuli, and they consist of several stationary events whose temporal frequency content can be characterized in terms of oscillations or rhythms. Precise localization of electrical events in the brain, based on the ERP data recorded from the scalp, has been one of the main challenges of functional brain imaging. Several currentDensity estimation techniques for identifying the electrical sources generating the brain potentials are developed for the so-called neuroelectromagnetic inverse problem in the last three decades (Baillet, Mosher, & Leahy, 2001; Koles, 1998; Michela, Murraya, Lantza, Gonzaleza, Spinellib, & Grave de Peraltaa, 2004; Scherg & von Cramon, 1986).