Fig. 5.

Cortical and cerebellar activations obtained in the parametric analysis based on the size of saccade error introduced by the target step. Blood oxygen level-dependent (BOLD) variations with amplitude correlated to the size of the error were found bilaterally in the calcarine sulcus, in the parieto-occipital sulcus, and on the superior occipital gyrus. One cluster was found in the intraparietal sulcus of the left hemisphere and 2 others in the frontal cortex of the right hemisphere: 1 in the precentral sulcus and 1 on the medial superior frontal gyrus. Activations were also observed in the right anterior insula and in the right temporo-parietal junction. Two clusters were found in the cerebellum (left lobule V and right lobule VI).