title: γ-band oscillations in fronto-central areas during performance of a sensorimotor integration task: a qEEG coherence study.
abstract: This study aimed to elucidate electrophysiological and cortical mechanisms involved in anticipatory actions when 23 healthy right-handed subjects had to catch a free falling object by qEEG γ-band (30-100 Hz). It is involved in cognitive processes, memory, spatial/temporal and proprioceptive factors. Our hypothesis is that an increase in γ coherence in frontal areas will be observed during moment preceding ball drop, due to their involvement in attention, planning, selection of movements, preparation and voluntary control of action and in central areas during moment after ball drop, due to their involvement in motor preparation, perception and execution of movement. However, through a paired t-test, we found an increase in gamma coherence for F3-F4 electrode pair during moment preceding ball drop and confirmed our hypothesis for C3-C4 electrode pair. We conclude that γ plays an important role in reflecting binding of several brain areas in a complex motor task as observed in our results. Moreover, for selection of movements, preparation and voluntary control of action, motor preparation, perception and execution of movement, the integration of somatosensory and visual information is mandatory.
authors.affiliation: Brain Mapping and Sensory Motor Integration, Institute of Psychiatry, Federal University of Rio de Janeiro (IPUB/UFRJ), Rio de Janerio, Brazil.
authors.forename: Silmar
authors.initials: S
authors.lastname: Teixeira
authors.forename: Bruna
authors.initials: B
authors.lastname: Velasques
authors.forename: Sergio
authors.initials: S
authors.lastname: Machado
authors.forename: Marlo
authors.initials: M
authors.lastname: Cunha
authors.forename: Clayton Amaral
authors.initials: CA
authors.lastname: Domingues
authors.forename: Henning
authors.initials: H
authors.lastname: Budde
authors.forename: Renato
authors.initials: R
authors.lastname: Anghinah
authors.forename: Luis F
authors.initials: LF
authors.lastname: Basile
authors.forename: Mauricio
authors.initials: M
authors.lastname: Cagy
authors.forename: Roberto
authors.initials: R
authors.lastname: Piedade
authors.forename: Pedro
authors.initials: P
authors.lastname: Ribeiro
mesh_terms: D000328:Adult; D001683:Biological Clocks / Q000502:physiology*; D001931:Brain Mapping / Q000379:methods; D058256:Brain Waves / Q000502:physiology*; D004569:Electroencephalography / Q000379:methods*; D005260:Female; D005625:Frontal Lobe / Q000033:anatomy & histology / Q000502:physiology*; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*