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Title of Journal: Exp Brain Res

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Abbravation: Experimental Brain Research

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Springer-Verlag

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DOI

10.1007/s12170-010-0136-2

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1432-1106

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Fitts’s Law violation and motor imagery are imagi

Authors: Petre V Radulescu Jos J Adam Martin H Fischer Jay Pratt
Publish Date: 2009/11/11
Volume: 201, Issue: 3, Pages: 607-611
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Abstract

Fitts’s Law for the timing of targeted movements states that when target width is held constant movement time MT will increase as the travelled distance increases Even imagined movements mentally simulated actions without actual actions obey Fitts’s Law Recently a violation of Fitts’s Law has been reported when targets occur in a structured array MT to the farthest target is shorter than that predicted by Fitts’s Law We conducted two experiments to determine if the violation also occurs for imagined movements Results showed a close correspondence between real and imaginary MTs across target locations including the Fitts’s violation for the farthest target We conclude that the violation of Fitts’s Law occurs in motor imagery and that the locus of the violation is in the planning stage of actionThis work was supported by a grant from the Natural Sciences and Engineering Council of Canada to JP Correspondence regarding this study should be directed to Jay Pratt Department of Psychology University of Toronto 100 St George Street Toronto ON Canada M5S 3G3

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