einstein (São Paulo). 30/Oct/2020;18:eAO5442.
Analysis of electroencephalography brain rhythms in the reading process
DOI: 10.31744/einstein_journal/2020AO5442
ABSTRACT
Objective:
To verify if, by three distinct quantifiers, the measured electroencephalographic signal at rest is different from the signal measured during a word reading situation, especially considering the faster rhythms, gamma and high-gamma, as it occurs in clinical rhythms (delta to beta).
Methods:
A total of 96 electroencephalographic signals measured from neurologically healthy volunteers were evaluated at two moments: resting and word reading. Each signal segment was measured by three quantifiers that separately assess normalized power, percent power, and right and left hemisphere coherence. The Mann-Whitney test was used to compare the results of the quantifiers in each brain range.
Results:
The gamma and high-gamma rhythms presented a more distinct behavior when comparing the analyzed moments (resting and reading) than the clinical rhythms.
Conclusion:
This finding contributes to the scarce literature on faster rhythms, which can contain information that is normally disregarded in neurological clinical practice.
Keywords: Electroencephalography; Reading; Gamma rhythm; Delta rhythm; Beta rhythm
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