Perturbations in action goal influence bimanual grasp posture planning.

Autor/inn/en	Hughes, Charmayne M. L.; Seegelke, Christian
Titel	Perturbations in action goal influence bimanual grasp posture planning. Gefälligkeitsübersetzung: Störungen des Handlungsziels beeinflussen die Planung der bimanuellen Griffhaltung.
Quelle	In: Journal of motor behavior, 45 (2013) 6, S. 473-478 PDF als Volltext Link als defekt meldenVerfügbarkeit
Sprache	englisch
Dokumenttyp	online; gedruckt; Zeitschriftenaufsatz
ISSN	0022-2895; 1940-1027
DOI	10.1080/00222895.2013.828677
Schlagwörter	Psychomotorik; Test; Experiment; Greifen; Biomechanik; Asymmetrie; Bewegungsanalyse; Bewegungsapparat; Bewegungsaufgabe; Bewegungslehre; Bewegungssteuerung; Neurophysiologie; Neuropsychologie; Koordination; Zielorientierung
Abstract	The authors examined the effects of perturbations in action goal on bimanual grasp posture planning. Sixteen participants simultaneously reached for 2 cylinders and placed either the left or the right end of the cylinders into targets. As soon as the participants began their reaching movements, a secondary stimulus was triggered, which indicated whether the intended action goal for the left or right hand had changed. Overall, the tendency for a single hand to select end-state comfort compliant grasp postures was higher for the nonperturbed condition compared to both the perturbed left and perturbed right conditions. Furthermore, participants were more likely to plan their movements to ensure end-state comfort for both hands during nonperturbed trials, than perturbed trials, especially object end-orientation conditions that required the adoption of at least one underhand grasp posture to satisfy bimanual end-state comfort. Results indicated that when the action goal of a single object was perturbed, participants attempted to reduce the cognitive costs associated with grasp posture replanning by maintaining the original grasp posture plan, and tolerating grasp postures that result in less controllable final postures. Verf.-Referat.
Erfasst von	Bundesinstitut für Sportwissenschaft, Bonn
Update	2015/1