## Chapter 9/Figure 3.jpg Back | Home | Next | (A) Composite map showing the 3D distribution of cholinergic cells projecting to four, arbitrarily defined medio-lateral sectors of the neocortex. In the color version of this figure (accompanying CD-ROM) cells projecting to different regions are color-coded (medial: red, intermediary sector: blue and yellow and lateral parts of the neocortex: green). Note the relatively ordered rostro-medial to caudo-lateral distribution of cells that project to medio-laterally located cortical areas. Dark (red) symbols in the lower right side of the model are rostral. Medial is right, lateral is left. (B) Iso-density surface rendering to show the major organizational features in the BF. Unit space: 400 x 400 x 50 micron, density threshold greater than 2 cell /voxel. For appreciation of the different cell groups see the color version of this figure where dark blue surface covers unit spaces that contain cholinergic cells projecting to the posteromedial (M1/M2) cortex; yellow: medial prefrontal cortex; red: barrel cortex; green: posterior insular-perirhinal; light blue: agranular insular-lateral orbital; magenta: lateral frontal (motor) cortex. The iso-relational rendering of part B is placed into the wireframe of the section outlines and the corpus callosum to show their real position in the original brain. Note that the view in (B) is a mirror image of (A). Here and at the rest of the 3D representations the numbers along the z axis are the layers (sections) and the x, and y values correspond to the voxel indices.