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

Kondakor, I.; Brandeis, D.; Wackermann, J.; Kochi, K.; Koenig, Thomas; Frei, E.; Pascual-Marqui, R. D.; Yagyu, T.; Lehmann, D. (1997). Multichannel EEG fields during and without visual input: frequency domain model source locations and dimensional complexities. Neuroscience letters, 226(1), pp. 49-52. Elsevier 10.1016/S0304-3940(97)00224-3

[img] Text
Clop_eye.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (134kB) | Request a copy

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).

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > Psychiatric Neurophysiology (discontinued)

UniBE Contributor:

König, Thomas

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0304-3940

Publisher:

Elsevier

Language:

English

Submitter:

Thomas König

Date Deposited:

14 Aug 2014 16:42

Last Modified:

27 Dec 2014 00:27

Publisher DOI:

10.1016/S0304-3940(97)00224-3

PubMed ID:

9153639

Uncontrolled Keywords:

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

BORIS DOI:

10.7892/boris.39731

URI:

https://boris.unibe.ch/id/eprint/39731

Actions (login required)

Edit item Edit item
Provide Feedback