Abstract. The new methodology was developed to calculate spectral characteristics of various compartments of the human brain. This technology combines two types of the spatial data: 1) functional tomogram presenting spatial distribution of the electric sources and 2) anatomical structure of the brain as determined by the magnetic resonance imaging. Presently the functional tomogram is calculated from the multichannel magnetoencephalograms. In the functional tomogram, unique spatial location corresponds to each elementary oscillation. Spatial structure of the brain compartment is generated by the segmentation of magnetic resonance image. The partial spectrum is composed by the selection of frequencies, belonging to this compartment. The software implementing this methodology was developed and applied to partial spectral analysis of the alpha rhythm.

 

Key words: magnetic encephalography, Fourier transform, frequency-pattern data analysis, functional tomogram, magnetic resonance imaging, partial spectrum.