title: Functional coupling of sensorimotor and associative areas during a catching ball task: a qEEG coherence study.
abstract: BACKGROUND
  Catching an object is a complex movement that involves not only programming but also effective motor coordination. Such behavior is related to the activation and recruitment of cortical regions that participates in the sensorimotor integration process. This study aimed to elucidate the cortical mechanisms involved in anticipatory actions when performing a task of catching an object in free fall.
  
  
  METHODS
  Quantitative electroencephalography (qEEG) was recorded using a 20-channel EEG system in 20 healthy right-handed participants performed the catching ball task. We used the EEG coherence analysis to investigate subdivisions of alpha (8-12 Hz) and beta (12-30 Hz) bands, which are related to cognitive processing and sensory-motor integration.
  
  
  RESULTS
  Notwithstanding, we found the main effects for the factor block; for alpha-1, coherence decreased from the first to sixth block, and the opposite effect occurred for alpha-2 and beta-2, with coherence increasing along the blocks.
  
  
  CONCLUSIONS
  It was concluded that to perform successfully our task, which involved anticipatory processes (i.e. feedback mechanisms), subjects exhibited a great involvement of sensory-motor and associative areas, possibly due to organization of information to process visuospatial parameters and further catch the falling object.
authors.affiliation: Laboratory of Panic and Respiration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Rio de Janeiro, Brazil. arias@brain-research.net.
authors.forename: Farmy
authors.initials: F
authors.lastname: Silva
authors.forename: Oscar
authors.initials: O
authors.lastname: Arias-Carrión
authors.forename: Silmar
authors.initials: S
authors.lastname: Teixeira
authors.forename: Bruna
authors.initials: B
authors.lastname: Velasques
authors.forename: Caroline
authors.initials: C
authors.lastname: Peressutti
authors.forename: Flávia
authors.initials: F
authors.lastname: Paes
authors.forename: Luis F
authors.initials: LF
authors.lastname: Basile
authors.forename: Manuel
authors.initials: M
authors.lastname: Menéndez-González
authors.forename: Eric
authors.initials: E
authors.lastname: Murillo-Rodríguez
authors.forename: Mauricio
authors.initials: M
authors.lastname: Cagy
authors.forename: Roberto
authors.initials: R
authors.lastname: Piedade
authors.forename: Antonio Egídio
authors.initials: AE
authors.lastname: Nardi
authors.forename: Sergio
authors.initials: S
authors.lastname: Machado
authors.forename: Pedro
authors.initials: P
authors.lastname: Ribeiro