Figure 4.

Conjunction of motor and visual components of letter production and handwritten form perception. A similar neural response occurred for areas involved in the visual-motor component of letter production and the perception of handwritten forms. (A) Overlap between motor and visual components of letter production. Areas in orange are areas that responded equally for the motor and visual components of letter production. The results of the conjunction analysis statistically confirm an overlap between motor and visual components in the bilateral posterior IPS and in the right inferior temporal gyrus. (B) Perception of handwritten forms. Areas that are in magenta were more active while looking at a static handwritten letter than while looking at a static typed letter; these include the left posterior IPS, right ventral-temporal cortex, and right posterior middle frontal gyrus. Group level results are displayed at a standard voxel-wise threshold of p_voxel < .001, and a cluster threshold of 40 contiguous 3-mm isometric voxels overlaid on an inflated anatomical image from a single participant. Anatomical label abbreviations: pSFS = posterior superior frontal sulcus; dPrG = dorsal precentral gyrus; vPrG = ventral precentral gyrus; dPoG = dorsal postcentral gyrus; aIPS = anterior IPS; pIPS = posterior IPS; FuG = fusiform gyrus; LH = left hemisphere; RH = right hemisphere.