Title :
A source model with 2-dimensional spread of electrical activity in the human brain
Author :
Ueno, Kenichi ; Iramina, Keiji ; Ueno, Shoogo
Author_Institution :
Dept. of Comput. Sci. & Commun. Eng., Kyushu Univ., Fukuoka, Japan
Abstract :
Here, the authors investigate a source model which is used in inverse problems of magnetoencephalography (MEG) or electroencephalography (EEG). A source model with a 2-dimensional spread which corresponds to the surface of the cortex is proposed. The spread of the source is expressed by locating many dipoles in a region. Assuming that the dipoles each have a time-varying moment, spatio-temporal patterns of magnetoencephalograms (MEGs) are simulated. The results show that the waveforms of MEG are affected significantly by varying the spread of the source
Keywords :
brain models; electroencephalography; inverse problems; magnetoencephalography; 2-dimensional electrical activity spread; MEG waveforms; cortex surface; dipoles location; electroencephalography inverse problem; human brain; magnetoencephalography inverse problem; source model; spatiotemporal patterns; time-varying moment; Biomedical engineering; Brain modeling; Delay; Electroencephalography; Humans; Inverse problems; Magnetic heads; Magnetoencephalography; Neurons; SQUIDs; Superconducting magnets;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.411805
