The coexistence of the broad-band fluctuation and α rhythm of the brain dynamics is studied
based on the zero-crossing property of the local electroencephalographic (EEG) recording …

In extending our previous results demonstrating critical fluctuations in
electropathophysiological brain activity prior to onset of partial epileptic seizures, we used …

In previous spectral analysis investigations, we demonstrated that the spontaneous activity
of the alpha EEG is not stationary but rather shows cyclic alterations with a circa 1-min …

The aim of the present paper was to analyze some non-linear dynamic properties of the
resting EEG from healthy subjects under eyes closed conditions. For this purpose we …

Higher brain functions depend upon the rapid creation and dissolution of ever changing
synchronous cell assemblies. We examine the hypothesis that the dynamics of this process …

“1/f-like” power spectrum scaling is a ubiquitous feature of complex systems. In such scaling,
the power spectrum of a given time series is dominated by an inverse power law, resulting in …

We show theoretically that the hypothesis of criticality as a theory of long-range fluctuation in
the human brain may be distinguished from the theory of passive filtering on the basis of …

The short-term structure of electroencephalogram (EEG) spectral transformations during
different brain functional states (closed/opened eyes and memory task) was studied. It was …

The scaling behaviors of the human electroencephalogram (EEG) time series are studied
using detrended fluctuation analysis. Two scaling regions are found in nearly every channel …

The basal states defined by the closed (EC) and open (EC) eyes conditions are revisited
using linear and nonlinear analysis approaches. We compared EO and EC control states …