Hand, Space and Attentional Asymmetries in Goal-Directed Manual Aiming

MSL research field: 
Motor control
TitleHand, Space and Attentional Asymmetries in Goal-Directed Manual Aiming
Publication TypeJournal Article
Year of Publication1997
AuthorsHodges, NJ, Lyons, J, COCKELL, D, REED, A, Elliott, D
Pagination251 - 269
Date Published1997

Two experiments were conducted to explore the interaction of the two cerebral hemispheres in motor control, by examining hand, space and attentional asymmetries in goal-directed aiming. In Experiment 1, right-handed subjects moved to targets more quickly with their right hand than their left hand. In addition, each hand was faster when moving in its own hemispace. Although in a control condition, movements were initiated more quickly with the left hand, visual distractors disrupted left hand performance more than right hand performance. For contralateral aiming, ipsilateral distractors caused the greatest interference. In Experiment 2, when targets and distractors were all presented at the midline, a right hand advantage was found for movement time along with a left hand advantage for reaction time, independent of target and distractor location. Our findings are discussed in terms of a right hemisphere role in movement preparation and the allocation of attention in space, and greater left hemisphere involvement in movement execution.

Short TitleCortex
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