Figure 1.

Multivariate analysis methods. On the reconstructed cortical surface, a circular area (searchlight) was selected. The activation values for all corresponding voxels (activation patterns) were extracted for all trials. A cross-validated classification approach was used for each hand separately to determine whether activation patterns contained information about the finger pressed. In areas with information about both contra- and ipsilateral fingers, we used a similarity analysis (Fig. 3) to determine the relationship between representation of contra- and ipsilateral fingers.