Equivalent dipole tracing of human alpha activities

B. He, W. Ye, T. Musha

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations

Abstract

The neural sources of human EEG electroencephalograph alpha activities have been investigated by an equivalent dipole fitting algorithm which takes the head shape into account. Two minutes of EEG were measured at 21 sites on the scalps of four young, healthy subjects. Single-moving-dipole fitting was performed, and a measure called proximity was introduced to evaluate the goodness of fit. The two-moving-dipole model was found to model the human alpha field very well. The equivalent dipoles are located symmetrically in both hemispheres when the amplitude of the mean squared field is large, and they change orientation over time. The results confirm previous findings that there may be multiple sources of alpha waves.

Original languageEnglish (US)
Pages (from-to)1217-1218
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume11 pt 4
StatePublished - Dec 1 1989
EventImages of the Twenty-First Century - Proceedings of the 11th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 2 - Seattle, WA, USA
Duration: Nov 9 1989Nov 12 1989

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