Motor execution affects action prediction

Springer, Anne, Brandstädter, Simone, Liepelt, Roman, Birngruber, Teresa, Giese, Martin, Mechsner, Franz and Prinz, Wolfgang (2011) Motor execution affects action prediction. Brain and Cognition, 76 (1). pp. 26-36. ISSN 0278-2626

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Abstract

Previous studies provided evidence of the claim that the prediction of occluded action involves real-time simulation. We report two experiments that aimed to study how real-time simulation is affected by simultaneous action execution under conditions of full, partial or no overlap between observed and executed actions. This overlap was analysed by comparing the body sides and the movement kinematics involved in the observed and the executed action. While performing actions, participants observed point-light (PL) actions that were interrupted by an occluder, followed by a test pose. The task was to judge whether the test pose depicted a continuation of the occluded action in the same depth angle. Using a paradigm proposed by Graf et al., we independently manipulated the duration of the occluder and the temporal advance of the test pose relative to occlusion onset (occluder time and pose time, respectively). This paradigm allows the assessment of real-time simulation, based on prediction performance across different occluder time/pose time combinations (i.e., improved task performance with decreasing time distance between occluder time and pose time is taken to reflect real-time simulation). The PL actor could be perceived as from the front or back, as indicated by task instructions. In Experiment 1 (front view instructions), evidence of action simulation was obtained for partial overlap (i.e., observed and performed action corresponded either in body side or movement kinematics), but not for full or no overlap conditions. The same pattern was obtained in Experiment 2 (back view instructions), ruling out a spatial compatibility explanation for the real-time pattern observed. Our results suggest that motor processes affect action prediction and real-time simulation. The strength of their impact varies as a function of the overlap between observed and executed actions

Item Type:	Article
Uncontrolled Keywords:	action prediction, internal simulation, motor execution, common coding, perception-action-link
Subjects:	B900 Others in Subjects allied to Medicine C800 Psychology
Department:	Faculties > Health and Life Sciences > Psychology
Depositing User:	Ay Okpokam
Date Deposited:	19 Dec 2011 10:20
Last Modified:	12 Oct 2019 16:29
URI:	http://nrl.northumbria.ac.uk/id/eprint/4255

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