Example photomicrographs of c-Fos induction in vestibular relays after sham exposure (A,D) or after 30-min magnetic field exposure in OVX rats (B,E) or OVX+E rats (C,F). IV, fourth ventricle; MeV, medial vestibular nucleus; Prp, prepositus nucleus, VII, genu of the 7th cranial nerve; SGe, supragenulis nucleus; SuV, superior vestibular nucleus.