Artículos de revistas
Analysis of slow- and fast-alpha band asymmetry during performance of a saccadic eye movement task: Dissociation between memory- and attention-driven systems
Fecha
2013-08-02Registro en:
JOURNAL OF THE NEUROLOGICAL SCIENCES, AMSTERDAM, v. 312, n. 41306, supl. 1, Part 2, pp. 62-67, 42005, 2012
0022-510X
10.1016/j.jns.2011.08.022
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
Institución
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. (C) 2011 Elsevier B.V. All rights reserved.