FIG 9. Semi-diagrammatic representation of the location of the lower brainstem nuclei analyzed in the present study, for comparison with fMRI findings (adapted from reference 5, with minor adjustments based on data in reference 2). Amb indicates the nucleus ambiguus; Cb, cerebellum; Cb ped, cerebellar peduncle; Cu, nucleus cuneatus; IC, inferior colliculus; IO, inferior olive; L Gen, lateral geniculate nucleus; NTS, NTS; SC, superior colliculus; V, main sensory trigeminal nucleus; VI, abducens nucleus; VII, facial nucleus; and XII, hypoglossal nucleus. For reference, the obex delineates the caudal angle of the rhomboid fossa or fourth ventricle.