Effort , Success , and Non - use 2 Determine Arm Choice

Nicolas Schweighofer*, Yupeng Xiao*, Sujin Kim, Toshinori Yoshioka, James Gordon, 4 Rieko Osu 5 1. Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 6 2. Neuroscience Graduate Program, University of Southern California, Los Angeles, CA 7 3. ATR Computational Neuroscience Laboratories, Kyoto, Japan 8 9 10 *These authors contributed equally to this work. 11 12 Running head: Effort, success, and non-use determine arm choice 13 14 15 Correspondence should be addressed to: 16 Nicolas Schweighofer 17 University of Southern California, Biokinesiology and Physical Therapy, 18 CHP 155, 1540 Alcazar Street, Los Angeles CA 90089, USA 19 email: [email protected] 20 Articles in PresS. J Neurophysiol (May 6, 2015). doi:10.1152/jn.00593.2014