Figure 2.

The specific neuroanatomic areas from which c-Fos immunolabeled nuclei were counted in subdivisions of the rostral vestibular nuclear complex (VNC). Enlargements of black box on low magnification image (A) containing the rostral VNC depicts unique grid square configurations used to identify ROIs for each subdivision: MVeMC (B), MVePC (C), and SuVe (D). Rectangles in B - D represent superimposed reticules on photomicrographs; grid squares (65 × 65 μm) bounded in red represent regions from which c-Fos counts were taken. For each reticule, letters A-E specify rows and 1–6 define the columns (represented in B’). Abbreviations: 1Cb: first cerebellar lobule; 4V: fourth ventricle; 8vn: vestibulocochlear nerve; D: dorsal; M: medial; MVeMC: medial vestibular nucleus - magnocellular; MVePC: medial vestibular nucleus - parvocellular; Rt: reticule (grid overlay defining subdivision configurations); SCP: superior cerebellar peduncle; sp5: spinal tract of the trigeminal nerve; SuVe: superior vestibular nucleus.