Functional Tomography of Complex Systems Using Spectral Analysis of Multichannel Measurement Data

Ustinin, M. N.; Boyko, A. I.; Rykunov, S. D.

doi:10.1134/s1054661823040491

Cited by 1 publication

(2 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Let us consider the theory and experimental justification of the MEG-based functional tomography, as they were set out in the works (Llinás and Ustinin 2014;Llinás et al 2015;Ustinin, Boyko, and Rykunov 2023). The encephalograph simultaneously records the values of magnetic field induction in K channels during time T producing a set of experimental vectors {B k } , k = 1, ..., K. The field is recorded at H points in time with a constant step T/H.…”

Section: Meg-based Functional Tomographymentioning

confidence: 99%

“…The spatial correspondence between age effects on cortical thickness and those on functional networks were studied in (Stier, Braun, and Focke 2023). Recently, the method of the MEG-based functional tomography was proposed (Llinás and Ustinin 2014;Llinás et al 2015;Ustinin, Boyko, and Rykunov 2023). It is based on detailed Fourier transform of the whole signal duration and massive solution of the inverse problem.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Total neuroelectric brain activity derived from resting-state MEG is invariable across the adult lifespan

Ustinin,

Boyko,

Rykunov

2024

Preprint

View full text Add to dashboard Cite

Ageing of the human brain was studied using large array of experimental data. The magnetic encephalograms and magnetic resonance images of the head were obtained from the open archive CamCAN. Bad data were rejected, then functional tomograms were found - the spatial distribution of elementary spectral components. Physiological noise was eliminated by joint analysis of the functional tomograms and magnetic resonance images. By massively solving the inverse problem, multichannel spectra were transformed into time series of the power of elementary current dipoles. Age-related changes in the electrical power of various brain rhythms were examined. It was found that the summary electrical activity of the brain is constant throughout a person’s life. The electric power is redistributed during the lifetime: delta rhythm is diminishing, giving slow rise to all other rhythms.

show abstract

Section: Meg-based Functional Tomographymentioning

confidence: 99%