Hemispheric differences over frontal theta-band power discriminate between stimulus- versus memory-driven saccadic eye movement
Por:
Velasques B., Machado S., Paes F., Bittencourt J., Domingues C.A., Basile L.F., Salles J.I., Cagy M., Piedade R., Arias-Carrión O., Sack A.T., Cheniaux E., Nardi A.E., Ribeiro P.
Publicada:
1 ene 2011
Categoría:
Neuroscience (miscellaneous)
Resumen:
Although several electrophysiological studies have demonstrated the role of theta band during the execution of different visuospatial attention tasks, this study is the first to directly investigate the role of theta power during the planning, execution and cognitive control of saccadic eye movements (SEMs). The current study aims at addressing this issue by investigating absolute theta power over the frontal cortex during the execution of random and fixed SEMs. Twelve healthy volunteers, performed two tasks involving different conditions in the planning, execution and cognitive control of SEMs while their brain activity pattern was recorded using quantitative electroencephalography. We found an interaction between SEM condition and electrode (F3, F4, Fz), and a main effect of time point and electrode. Our key finding revealed that the stimulus presentation induces different patterns over frontal theta power increase between the left and right hemisphere. We conclude that right and left frontal regions are an important factor to discriminate between memory- versus stimulus-driven SEMs, and speculate on their different contributions to visuospatial attention. © 2011 Elsevier Ireland Ltd.
Filiaciones:
Velasques B.:
Brain Mapping and Sensory Motor Integration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil
Institute of Applied Neuroscience (INA), Rio de Janeiro, Brazil
Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Neurophysiology and Neuropsychology of Attention, Brazil
Neuromuscular Research Laboratory, National Institute of Traumatology and Orthopaedics (NITO), Rio de Janeiro, Brazil
Machado S.:
Brain Mapping and Sensory Motor Integration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil
Institute of Applied Neuroscience (INA), Rio de Janeiro, Brazil
Panic and Respiration Laboratory, Federal University of Rio de Janeiro (UFRJ), INCT Translational Medicine (CNPq), Brazil
Paes F.:
Panic and Respiration Laboratory, Federal University of Rio de Janeiro (UFRJ), INCT Translational Medicine (CNPq), Brazil
Faculty of Psychology, Brazilian Institute of Medicine and Rehabilitation (IBMR), Rio de Janeiro, Brazil
Bittencourt J.:
Brain Mapping and Sensory Motor Integration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil
Institute of Psychiatry of the Federal University of Rio de Janeiro (IPUB/UFRJ), Neurophysiology and Neuropsychology of Attention, Brazil
Domingues C.A.:
Division of Epidemiology and Biostatistics, Institute of Health Community, Federal Fluminense University (UFF), Rio de Janeiro, Brazil
Escola de Aperfeiçoamento de Oficiais, EsAO - Ministério do Exército, Brazil
Basile L.F.:
Division of Neurosurgery, University of São Paulo Medical School, Brazil
Laboratory of Psychophysiology, UMESP, Brazil
Salles J.I.:
Neuromuscular Research Laboratory, National Institute of Traumatology and Orthopaedics (NITO), Rio de Janeiro, Brazil
Brazilian Volleyball Confederation, Rio de Janeiro, Brazil
Cagy M.:
Division of Epidemiology and Biostatistics, Institute of Health Community, Federal Fluminense University (UFF), Rio de Janeiro, Brazil
Piedade R.:
Brain Mapping and Sensory Motor Integration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil
Arias-Carrión O.:
Department of Neurology, Philipps University, Marbug, Germany
Sack A.T.:
Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands
Cheniaux E.:
Anxiety and 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
Nardi A.E.:
Panic and Respiration Laboratory, Federal University of Rio de Janeiro (UFRJ), INCT Translational Medicine (CNPq), Brazil
Ribeiro P.:
Brain Mapping and Sensory Motor Integration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Brazil
School of Physical Education, Bioscience Department (EEFD/UFRJ), Brazil
Institute of Applied Neuroscience (INA), Rio de Janeiro, Brazil
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