Spatial neuronal synchronization and the waveform of oscillations: Implications for EEG and MEG.

ABSTRACT: Neuronal oscillations are ubiquitous in the human brain and are implicated in virtually all brain functions. Although they can be described by a prominent peak in the power spectrum, their waveform is not necessarily sinusoidal and shows rather complex morphology. Both frequency and temporal descriptions of such non-sinusoidal neuronal oscillations can be utilized. However, in non-invasive EEG/MEG recordings the waveform of oscillations often takes a sinusoidal shape which in turn leads to a rather oversimplified view on oscillatory processes. In this study, we show in simulations how spatial synchronization can mask non-sinusoidal features of the underlying rhythmic neuronal processes. Consequently, the degree of non-sinusoidality can serve as a measure of spatial synchronization. To conf

SUBMITTER: Schaworonkow N 

PROVIDER: S-EPMC6534335 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature