Analysis of electroencephalography brain rhythms in the reading process

• Autor(a) principal: Ramos,Camila Davi
• Data de Publicação: 2020
• Outros Autores: Lima,Izabella Nonato Oliveira, Rodrigues,Amanda Luiza, Magalhães,Kaliny Alice Carvalho de Oliveira, Rodrigues,Aurélia Aparecida de Araújo, Destro-Filho,João-Batista
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Einstein (São Paulo)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-45082020000100276
• topic: Electroencephalography; Reading; Gamma rhythm; Delta rhythm; Beta rhythm

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.