[Eeglablist] Is this what we see in the EEG?

[Jack Shelley-Tremblay]

This makes sense to me, based on my experience.

Does analysis of Event-related desynchronization/synchronization cover at
least some of what you are talking about?

It seems to me as if capturing the disappearance of regular rhythms and
their modification be stimulus-driven activity is what ERD/ERSP does
pretty well?

Jack Shelley-Tremblay, Ph.D.

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On Sat, May 9, 2026 at 10:44 AM Евгений Машеров via eeglablist <
eeglablist at sccn.ucsd.edu> wrote:

> A provocative statement (intended for criticism, though throwing rotten
> apples and rotten eggs is not advisable)
>
> When we look at an EEG, we overlook the more essential, seeing only the
> secondary. Beautiful graphic elements, easily recognizable by the eye,
> elegant sinusoids, so effectively analyzed by Fourier, are a manifestation
> not of brain activity, but of its inactivity. These are resting rhythms,
> idle rhythms, whether they manifest during a temporary shutdown of sensory
> input, like the occipital alpha rhythm, or the mu rhythm that disappears as
> soon as a hand is moved, or the delta rhythm when activity ceases during
> sleep, or the pathological delta rhythm in the perifocal zone of a tumor,
> where there is still nerve tissue, but it is no longer functional (and then
> there is alpha coma...). True brain activity manifests itself in the higher
> frequency range and over a very broad frequency band (which corresponds to
> the conclusions of information theory regarding bandwidth and information
> transmission intensity). However, its amplitude is small and its regularity
> is insufficient, so we limit our
>  selves to noting the presence of beta or gamma activity, admiring the
> beautiful oscillations easily identifiable by the eye.
> I believe this is a challenge that requires the development of new methods
> of EEG analysis, not discarding existing ones, but exploring new ones
> (nonlinear? multidimensional? based on systems of orthogonal functions
> other than sinusoids?). The work on "1/f" that began in this community,
> after a fairly active start, has suddenly slowed down. Perhaps it should be
> intensified? But what if there are better ideas?
>
> Your truly
>
> Eugen Masherov
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