Multichannel EEG fields during and without visual input: Frequency domain model source locations and dimensional complexities

I. Kondákor, D. Brandeis, J. Wackermann, K. Kochi, T. Koenig, E. Frei, R. D. Pascual-Marqui, T. Yagyu, D. Lehmann

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

27-Channel EEG potential map series were recorded from 12 normals with closed and open eyes. Intracerebral dipole model source locations in the frequency domain were computed. Eye opening (visual input) caused centralization (convergence and elevation) of the source locations of the seven frequency bands, indicative of generalized activity; especially, there was clear anteriorization of α-2 (10.5-12 Hz) and β-2 (18.5-21 Hz) sources (α-2 also to the left). Complexity of the map series' trajectories in state space (assessed by Global Dimensional Complexity and Global OMEGA Complexity) increased significantly with eye opening, indicative of more independent, parallel, active processes. Contrary to PET and fMRI, these results suggest that brain activity is more distributed and independent during visual input than after eye closing (when it is more localized and more posterior).

Original languageEnglish
Pages (from-to)49-52
Number of pages4
JournalNeuroscience Letters
Volume226
Issue number1
DOIs
Publication statusPublished - Apr 18 1997

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Electroencephalography
Magnetic Resonance Imaging
Brain

Keywords

  • Brain electric field
  • Dimensional complexity
  • FFT-Dipole-Approximation
  • fMRI
  • Frequency domain source localization
  • PET
  • Visual input

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Multichannel EEG fields during and without visual input : Frequency domain model source locations and dimensional complexities. / Kondákor, I.; Brandeis, D.; Wackermann, J.; Kochi, K.; Koenig, T.; Frei, E.; Pascual-Marqui, R. D.; Yagyu, T.; Lehmann, D.

In: Neuroscience Letters, Vol. 226, No. 1, 18.04.1997, p. 49-52.

Research output: Contribution to journalArticle

Kondákor, I, Brandeis, D, Wackermann, J, Kochi, K, Koenig, T, Frei, E, Pascual-Marqui, RD, Yagyu, T & Lehmann, D 1997, 'Multichannel EEG fields during and without visual input: Frequency domain model source locations and dimensional complexities', Neuroscience Letters, vol. 226, no. 1, pp. 49-52. https://doi.org/10.1016/S0304-3940(97)00224-3
Kondákor, I. ; Brandeis, D. ; Wackermann, J. ; Kochi, K. ; Koenig, T. ; Frei, E. ; Pascual-Marqui, R. D. ; Yagyu, T. ; Lehmann, D. / Multichannel EEG fields during and without visual input : Frequency domain model source locations and dimensional complexities. In: Neuroscience Letters. 1997 ; Vol. 226, No. 1. pp. 49-52.
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