Novel Methods for the Visualization and Analysis of Functional Maps in Cortex

Flat Maps 24 3.7.5 Aligning The program mrAlign is a plug-in of mrLoadRet (see next section) and it is used to automati- cally or manually align the low-resolution inplane anatomy data to the high-resolution volume anatomy data (vAnatomy; the reference volume). This produces an affine 4x4 alignment ma trix, which specifies the transformation between inplane coordinates and high-resolution vol- ume coordinates. Please refer to [Nestares and Heeger, 2000 #40] for further information. (a) (b) CS STS PO Ca STS Ca PO CS Frontal Temporal Parietal 5 cm Occipital (c) Figure 9: Flattening of cortical surface In (a), the surface view of a hemisphere can be seen; (b) shows the flattened repre- sentation of an entire hemisphere; it is shaded according to the local convexity of the cortical surface; Both (a) and (b) show principal sulci (CS=central sulcus; STS=superior temporal sulcus; PO=parieto occipital sulcus; Ca=calcarine sulcus; Source: [Wandell, et al., 2000 #38]