Figure 3
VBM results with PCA component (model 3, N = 267). The VBM results overlaid on the canonical T1 images (SPM), showing lesions associated with the PCA writing specific components. Lesion associated with using pen (PC 3) are presented in green, lesion associated with using pen to produce meaningful symbols (PC 4) are blue. The charts represent effect size (beta) for each writing tasks, the complex figure copy and the average effect size for the language (L) and motor (M) tasks. The error bars are 90% confidence interval of the effect size. Abbreviations: L, left, R: right, SFG, superior frontal gyrus; MFG, middle frontal gyrus; IOFG, inferior orbitalis frontal gyrus; AG, angular gyrus; MTG, middle temporal gyrus; ITG, inferior temporal gyrus, IOG, inferior occipital gyrus; WW, word writing; NW, number writing; CFC, complex figure copy; L, language tasks, M, motor tasks. See Supplementary Figs. 2 and 3 for case examples of lesion on the CT scans.
