Please use this identifier to cite or link to this item: https://observatorio.fm.usp.br/handle/OPI/1214
Title: Analysis of slow- and fast-alpha band asymmetry during performance of a saccadic eye movement task: Dissociation between memory- and attention-driven systems
Authors: SANFIM, AntonioVELASQUES, BrunaMACHADO, SergioARIAS-CARRION, OscarPAES, FlaviaTEIXEIRA, SilmarSANTOS, Joana LuzBITTENCOURT, JulianaBASILE, Luis F.CAGY, MauricioPIEDADE, RobertoSACK, Alexander T.NARDI, Antonio EgidioRIBEIRO, Pedro
Citation: JOURNAL OF THE NEUROLOGICAL SCIENCES, v.312, n.1-2, p.62-67, 2012
Abstract: 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.
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