On interference effects in concurrent perception and action |
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Authors: | Jan Zwickel Marc Grosjean Wolfgang Prinz |
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Institution: | (1) Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany;(2) Leibniz Research Centre for Working Environment and Human Factors, Ardeystrasse 67, 44139 Dortmund, Germany;(3) Neuro-Cognitive Psychology Unit, Department of Psychology, Ludwig Maximilians University Munich, Leopoldstrasse 13, 80802 Munich, Germany |
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Abstract: | Recent studies have reported repulsion effects between the perception of visual motion and the concurrent production of hand
movements. Two models, based on the notions of common coding and internal forward modeling, have been proposed to account
for these phenomena. They predict that the size of the effects in perception and action should be monotonically related and
vary with the amount of similarity between what is produced and perceived. These predictions were tested in four experiments
in which participants were asked to make hand movements in certain directions while simultaneously encoding the direction
of an independent stimulus motion. As expected, perceived directions were repelled by produced directions, and produced directions
were repelled by perceived directions. However, contrary to the models, the size of the effects in perception and action did
not covary, nor did they depend (as predicted) on the amount of perception–action similarity. We propose that such interactions
are mediated by the activation of categorical representations. |
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Keywords: | |
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