The group mean of the inter-keystroke interval (IKI) while playing an unpracticed tone sequence as fast and accurately as possible (A), and a mirrored tone sequence with an unpracticed right hand (B) at the first and final days of the practice sessions for the trained group (filled circle) and control group (open circle). An error bar indicates the standard error. *: p < 0.05, **: p < 0.01. (Subsets) a tone sequence used for the current intra-manual near transfer test (A), and the inter-manual transfer test (B). The numbers indicate fingering (2 to 5 correspond to index to little finger).
Furuya et al. BMC Neuroscience 2013 14:133 doi:10.1186/1471-2202-14-133