Rightward biases during bimanual reaching

Gavin Buckingham, David Peter Matthew Carey

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Two experiments were carried out to investigate whether attention is biased toward the right hand of right handers during bimanual coordination (Peters 1981). A novel discontinuous double-step reaching task was developed, where right-handed participants executed a bimanual reach followed by a left or right hand unimanual reach. Asymmetries in the downtime between the bimanual and unimanual reach portions (the refractory period) were used to infer the direction of attention. A shorter right hand refractory period was found in the first experiment, indicating a rightward bias in attention. In a second experiment, shifting the focus of attention during the bimanual portion of the reach altered the direction and magnitude of the asymmetry in a way consistent with the attentional bias hypothesis. The role of attention during bimanual reaching, and a further programme of experimental work aimed at clarifying the nature of these rightward biases during discrete bimanual coordination is discussed.

Original languageEnglish
Pages (from-to)197-206
Number of pages10
JournalExperimental Brain Research
Volume194
Issue number2
DOIs
Publication statusPublished - Apr 2009

Keywords

  • bimanual coordination
  • attention
  • laterality
  • handedness
  • manual asymmetries
  • hemispatial differences
  • interlimb coordination
  • movement control
  • motor attention
  • hand preference
  • arm movements
  • eye-movements
  • lateralization
  • localization

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