Fig. 8

Quantitative spatial analysis of the globus pallidus external (GPe) and internal (GPi) across rat brain atlases. (a) Lateral view of the WHS rat brain atlas (WHSSD) GPe (pink), with magnified panel showing the spatial position and angle of three selected atlas plates (dashed lines) from rostral (a1), middle (a2) and caudal (a3) part of The Rat Brain in Stereotaxic Coordinates (RBSC) GPe. The WHSSD cut to correspond with the three selected atlas plates from RBSC (a1’-a3’), showing the spatial correspondence of the GPe (black dashed line filled with a transparent white colour) with regions in the WHSSD. The WHSSD GPe-m and GPe-l are highlighted for comparison (white dashed lines). (b) Lateral view of the WHSSD GPe, showing the spatial position and angle of the selected atlas plates (a1-a3, dashed lines) and the remaining RBSC atlas plates including GPe annotations (solid lines). The boxes (b1-b3) indicate the three rostro-caudal parts used for analysis of the quantitative spatial overlap of the RBSC GPe with regions in the WHSSD. The pie charts (b1’-b3’) show the proportion of the RBSC GPe annotation situated in regions of the WHSSD. (c,d) Selected atlas plates (c1-c3,c1’-c3’), spatial position (d1-d3) and pie charts (d1’-d3’) for the Brain Maps (BM) GPe annotation in relation to WHSSD regions, as described for (a,b). (e,f) Selected atlas plates (e1-e3,e1’-e3’), spatial position (f1-f3) and pie charts (f1’-f3’) for the BM GPi annotation in relation to WHSSD regions, as described for (a,b). Note that the atlas plates from BM are registered with a mediolateral angle of 4 degrees, which in c1-c3, d1-d3,e1-e3 and f1-f3 gives an illusion of a dorsoventral angle in some atlas plates. Abbreviations: aca-p, anterior commissure, posterior limb; Am-u, amygdaloid area, unspecified; BFR-u, basal forebrain region, unspecified; BM, Brain Maps; CPu, caudate putamen; EP, entopeduncular nucleus; GP, globus pallidus; GPe, globus pallidus external; GPi, globus pallidus internal; GPe-l, globus pallidus external, lateral part; GPe-m, globus pallidus external, medial part; ic-cp-lfp-py, corticofugal tract and corona radiata; VP, ventral pallidum; VSR-u, ventral striatal region, unspecified; RBSC, The Rat Brain in Stereotaxic Coordinates; st, stria terminalis; WHSSD, WHS rat brain atlas; ZI-v, zona incerta, ventral part.