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https://observatorio.fm.usp.br/handle/OPI/1214
Título: | Analysis of slow- and fast-alpha band asymmetry during performance of a saccadic eye movement task: Dissociation between memory- and attention-driven systems |
Autor: | SANFIM, Antonio; VELASQUES, Bruna; MACHADO, Sergio; ARIAS-CARRION, Oscar; PAES, Flavia; TEIXEIRA, Silmar; SANTOS, Joana Luz; BITTENCOURT, Juliana; BASILE, Luis F.; CAGY, Mauricio; PIEDADE, Roberto; SACK, Alexander T.; NARDI, Antonio Egidio; RIBEIRO, Pedro |
Citación: | JOURNAL OF THE NEUROLOGICAL SCIENCES, v.312, n.1-2, p.62-67, 2012 |
Resumen: | This study aimed at analyzing the relationship between slow- and fast-alpha asymmetry within frontal cortex and the planning, execution and voluntary control of saccadic eye movements (SEM), and quantitative electroencephalography (qEEG) was recorded using a 20-channel EEG system in 12 healthy participants performing a fixed (i.e., memory-driven) and a random SEM (i.e., stimulus-driven) condition. We find main effects for SEM condition in slow- and fast-alpha asymmetry at electrodes F3-F4, which are located over premotor cortex, specifically a negative asymmetry between conditions. When analyzing electrodes F7-F8, which are located over prefrontal cortex, we found a main effect for condition in slow-alpha asymmetry, particularly a positive asymmetry between conditions. In conclusion, the present approach supports the association of slow- and fast-alpha bands with the planning and preparation of SEM, and the specific role of these sub-bands for both, the attention network and the coordination and integration of sensory information with a (oculo)-motor response. |
Aparece en las colecciones: | Artigos e Materiais de Revistas Científicas - HC/ICHC |
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art_BASILE_Analysis_of_slow_and_fast_alpha_band_asymmetry_2012.PDF Restricted Access | publishedVersion (English) | 466.77 kB | Adobe PDF | Visualizar/Abrir Request a copy |
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