Alpha-band power in the left frontal cortex discriminates the execution of fixed stimulus during saccadic eye movement |
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| Authors: | Juliana Bittencourt,Sergio Machado,Silmar Teixeira,Gunhter Schlee,José Iná cio Salles,Henning Budde,Luis F. Basile,Antonio Egidio Nardi,Mauricio Cagy,Roberto Piedade,Alexander T. Sack,Bruna Velasques,Pedro Ribeiro |
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| Affiliation: | 1. Brain Mapping and Sensory Motor Integration, Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil;2. Institute of Applied Neuroscience (INA), Rio de Janeiro, Brazil;3. Department of Sport Science and Physical Education, School of Science and Engineering, Reykjavik University, Reykjavik, Iceland;4. Division of Neurosurgery, University of São Paulo Medical School, Brazil;5. Laboratory of Psychophysiology, Department of Psychology and Phonoaudiology, UMESP, Brazil;6. Division of Epidemiology and Biostatistics, Institute of Health Community, Federal Fluminense University (UFF), Rio de Janeiro, Brazil;g School of Physical Education, Bioscience Department (EEFD/UFRJ), Brazil;h Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands;i Panic & Respiration Laboratory, Institute of Psychiatry, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil;j Chemnitz University of Technology, Faculty of Behavioral and Social Sciences, Institute for Sport Science, Department of Human Locomotion, Chemnitz, Germany;k National Institute of Translational Medicine (INCT-TM), Brazil;l Neuromuscular Research Laboratory, National Institute of Traumatology and Orthopaedics (NITO), Rio de Janeiro, Brazil;m Neurophysiology and Neuropsychology of Attention, Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil;n Federal Confederation of Volleyball, Brazil;o Veiga de Almeida University, Brazil |
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| Abstract: | Introduction: The saccadic paradigm has been used to investigate specific cortical networks involving attention. The behavioral and electrophysiological investigations of the SEM contribute significantly to the understanding of attentive patterns presented of neurological and psychiatric disorders and sports performance. Objective: The current study aimed to investigate absolute alpha power changes in sensorimotor brain regions and the frontal eye fields during the execution of a saccadic task. Methods: Twelve healthy volunteers (mean age: 26.25; SD: ±4.13) performed a saccadic task while the electroencephalographic signal was simultaneously recorded for the cerebral cortex electrodes. The participants were instructed to follow the LEDs with their eyes, being submitted to two different task conditions: a fixed pattern versus a random pattern. Results: We found a moment main effect for the C3, C4, F3 and F4 electrodes and a condition main effect for the F3 electrode. We also found interaction between factor conditions and frontal electrodes. Conclusions: We conclude that absolute alpha power in the left frontal cortex discriminates the execution of the two stimulus presentation patterns during SEM. |
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| Keywords: | Absolute alpha power Saccadic movement Quantitative electroencephalography (qEEG) Sensorimotor integration |
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