Please cite this article as: Janczyk, M., Skirde, S., Weigelt, M., Kunde, W., Visual and tactile action effects determine bimanual coordination performance, Human Movement Science (2009Science ( ), doi: 10.1016Science ( /j.humov.2009 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
ACCEPTED MANUSCRIPT
ACCEPTED MANUSCRIPT
AbstractEffect-based models of motor control assign a crucial role to anticipated perceptual feedback in action planning. Two experiments were conducted to test the validity of this proposal for discrete bimanual key press responses. The results revealed that the normally observed performance advantage for the preparation of two responses with homologous rather than non-homologous fingers becomes inverted when homologous fingers produce non-identical visual effects, and non-homologous fingers produce identical visual effects. In Experiment 2 the finger homology effect was strongly reduced when homologous fingers produced nonidentical tactile feedback. The results show that representations of to-be-produced visual and tactile action effects both contribute to action planning, though possibly to a varying degree.Implications of these results for effect-based models of motor control are considered.