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Saunier, Ghislain, Paillard, Aurore, Vargas, Claudia D. and Pozzo, Thierry (2015) Visual inference of arm movement is constrained by motor representations. Behavioural Brain Research, 290. pp. 197-200. ISSN 0166-4328
Several studies support the idea that motion inference is strongly motor dependent. In the present study, we address the role of biomechanical constraints in motion prediction and how this implicit knowledge can interfere in a spatial prediction task. Right-handed (RHS) and left-handed subjects (LHS) had to estimate the final position of a horizontal arm movement in which the final part of the trajectory was hidden. Our study highlighted a direction effect: endpoint prediction accuracy was better to infer the final position of horizontal motion directed toward the median line of human body. This finding suggests that the spatial prediction of endpoint is mapped onto implicit biomechanical knowledge such as joint limitation. Accordingly, motor repertoires are embodied into spatial prediction tasks.
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