Brain Topography

, Volume 15, Issue 4, pp 233–238

Optimized Individual Mismatch Negativity Source Localization Using a Realistic Head Model and the Talairach Coordinate System

  • Kyoo Seob Ha
  • Tak Youn
  • Seog Weon Kong
  • Hae-Jeong Park
  • Tae Hyon Ha
  • Myung Sun Kim
  • Jun Soo Kwon
Article

DOI: 10.1023/A:1023910108759

Cite this article as:
Ha, K.S., Youn, T., Kong, S.W. et al. Brain Topogr (2003) 15: 233. doi:10.1023/A:1023910108759

Abstract

The purpose of this study is to evaluate the difference between anatomical locations of mismatch negativity (MMN) generators using a realistic head model and the Talairach coordinate system. This was performed by dipole source analysis by using a high density 128 channel electroencephalography (EEG) acquisition system and the subjects' individual 3D magnetic resonance images (MRI) for the realistic head model, in 24 healthy subjects. For dipole source localization, both the Talairach coordinate system and the individual MRI realistic head models were used and location results were compared. The MMN generators were clearly localized in the superior temporal gyri, especially in Heschl's gyrus, according to each individual's structural MRI. Only 37.5% of subjects showed the same anatomical locations of the MMN generator in both hemispheres in the realistic head model and in Talairach coordinate system, but fifteen subjects (62.5%) didn't. This result indicates that individually registered functional locations are desirable for the precise localization of activated areas in functional imaging studies and that a brain coordinate system is needed which adequately accounts for ethnic differences.

Mismatch negativity Dipole source localization Talairach coordinates system Realistic head model Interethnic brain difference 

Copyright information

© Human Sciences Press, Inc. 2003

Authors and Affiliations

  • Kyoo Seob Ha
    • 1
  • Tak Youn
    • 1
  • Seog Weon Kong
    • 1
  • Hae-Jeong Park
    • 2
  • Tae Hyon Ha
    • 3
    • 2
  • Myung Sun Kim
    • 2
  • Jun Soo Kwon
    • 3
    • 2
  1. 1.Department of Psychiatry,Seoul National University College of Medicine,Seoul,South Korea
  2. 2.BK 21 Human Life Sciences,Seoul National University College of Medicine,Seoul,South Korea
  3. 3.Department of Psychiatry,Seoul National University College of Medicine,Seoul,South Korea

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