Introduction:

the signal of the EEG is usually interpreted from a linear perspective, however, for some decades now the electrical activity of the brain has been studied as a dynamic system, based on the theory of chaos, with non-linear mathematics.

Objective:

analize the stability of correlations of hurst indices over time in resting subjects with closed eyes.

Methods:

13 male university students were evaluated with the brain-interface device Emotiv Epoc® with sampling frequency of 128 Hz. the frequency ranges delta (1-3 Hz), theta (3.5-7 Hz), alpha (8-12 Hz), beta (13-30 Hz) and gamma (>30 Hz) were analyzed.

Results:

the results show stability in the percentage of correlations in all the bands studied in most of the subjects. this situation occurs in temporary windows of 10, 30 and 60 seconds.

Conclusion:

this exploratory study shows the persistence intime of non-linear meta-synchronous processes that obey the dynamics of balance chaos/global order of the brain, in resting conditions, basal with closed eyes.

        · resumen en Español     · texto en Español     · Español ( pdf )