Effects of stimulus cueing on bimanual grasp posture planning.

Experimental Brain Research
Charmayne M L HughesChristoph Schütz

Abstract

The purpose of the present study was to investigate whether difficulties in bimanual grasp posture planning arise from conflicts in response selection. Forty-five participants were assigned to one of three groups (symbolic cueing, semi-symbolic cueing, and direct cueing) and instructed to reach for, grasp, and place two objects on a board in various end-orientations, depending on condition. In general, the tendency to adopt initial grasps that resulted in end-state comfort was significantly higher for the semi-symbolic, than that for the other two groups. There were, however, noticeable individual differences in grip behavior in the symbolic and direct cueing groups. Although the majority of participants performed the task in a similar fashion to the semi-symbolic group, there was a subset of participants (40% in each group) who grasped the two objects using an overhand grip in virtually all trials, regardless of condition. It is hypothesized that the observed individual differences in grasp posture strategy arise from differences in motor planning abilities, or the strategies participants employ in order to comply with task demands. A secondary finding is that the degree of interlimb coupling was larger for congruent, than inc...Continue Reading

References

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Apr 13, 2011·Experimental Brain Research·Charmayne M L HughesJoong Hyun Ryu
Jun 21, 2011·Experimental Brain Research·Jarrod BlinchRomeo Chua

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Citations

Aug 14, 2012·Experimental Brain Research·Christian SeegelkeThomas Schack
Sep 7, 2013·Journal of Motor Behavior·Charmayne M L Hughes, Christian Seegelke
Feb 27, 2013·Laterality·Charmayne M L HughesChristian Seegelke
Jul 12, 2013·PloS One·Jan WesterholzDirk Koester
Feb 19, 2014·Experimental Brain Research·Oliver HerbortWilfried Kunde
Aug 28, 2014·Experimental Brain Research·John M HuhnRobrecht P van der Wel
Jun 14, 2015·Experimental Brain Research·Christian SeegelkeMatthias Weigelt
Jan 8, 2015·Frontiers in Psychology·Christian SeegelkeThomas Schack

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