Changes in absolute theta power in bipolar patients during a saccadic attention task.

Autor: Cartier C; Neurophysiology and Neuropsychology of Attention, Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil., Diniz C; Institute of Applied Neuroscience (IAN), Rio de Janeiro, Brazil., Di Girogio L; Neurophysiology and Neuropsychology of Attention, Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil., Bittencourt J; Institute of Applied Neuroscience (IAN), Rio de Janeiro, Brazil; Veiga de Almeida University (UVA), Rio de Janeiro, Brazil; Neurophysiology and Neuropsychology of Attention, Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil., Gongora M; Brain Mapping and Sensory Motor Integration, Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil., Ken Tanaka G; Institute of Applied Neuroscience (IAN), Rio de Janeiro, Brazil; Neurophysiology and Neuropsychology of Attention, Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil., Teixeira S; Brain Mapping and Plasticity Laboratory, Federal University of Piauí (UFPI), Parnaíba, Brazil., Basile LF; Division of Neurosurgery, University of São Paulo Medical School, Brazil; Laboratory of Psychophysiology, Department of Psychology and Phonoaudiology, UMESP, Brazil., Novis F; Anxiety & Depression Laboratory, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil., Angélica Silveira L; Anxiety & Depression Laboratory, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil., da Silva Rde A; Anxiety & Depression Laboratory, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil., Cagy M; Biomedical Engineering Program, COPPE, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil., Cheniaux E; Anxiety & Depression Laboratory, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil; Department of Medical Specialities, State University of Rio de Janeiro (UERJ), Brazil., Ribeiro P; Brain Mapping and Sensory Motor Integration, Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil; Institute of Applied Neuroscience (IAN), Rio de Janeiro, Brazil; School of Physical Education, Bioscience Department (EEFD/UFRJ), Brazil., Velasques B; Institute of Applied Neuroscience (IAN), Rio de Janeiro, Brazil; Neurophysiology and Neuropsychology of Attention, Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil; School of Physical Education, Bioscience Department (EEFD/UFRJ), Brazil. Electronic address: bruna_velasques@yahoo.com.br.
Jazyk: angličtina
Zdroj: Psychiatry research [Psychiatry Res] 2015 Aug 30; Vol. 228 (3), pp. 785-90. Date of Electronic Publication: 2015 May 29.
DOI: 10.1016/j.psychres.2015.05.025
Abstrakt: The present study analyzed absolute theta power (ATP) in brain areas involved with attention in the three phase of BD while the patients performing a saccadic attention task. We hypothesized that patients in depression and mania states show a higher ATP compared to euthymic patients, since a higher ATP is indicative of attention deficit. We analyzed the frontal (F7, F3, Fz, F4 and F8) and central (C3, Cz and C4) areas. Thirty bipolar patients were enrolled in this study. The subjects performed a saccadic attention task while their brain activity pattern was recorded using quantitative electroencephalography (20 channels). Our results showed a main effect for group over C3, C4, Cz, F7, F4, F8 electrodes, and a main effect for moment over Cz, F7, F8 electrodes. These results indicate that both task and groups produce changes in theta activity in distinct cortical areas that participate in the organization of attention. Our results therefore demonstrate that, although it is well established in the literature that theta has a relevant role in the attention process, it is necessary to deepen the investigations to better understand the specifics of theta during visual processing tasks that have a demand for attention.
(Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.)
Databáze: MEDLINE
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