Efferent vestibular fibers to otolith organs in guinea pigs

The origins of efferent vestibular fibers to the otolith organs in guinea pigs, examined with the use of retrograde transport of HRP were: i) the bilateral lateral portions of the facial genu and ii) the ipsilateral reticular nucleus at the level of the facial nucleus. These origins are almost the same as those of the efferent fibers to the three semicircular canals which we have previously identified in cats; however, they differ in certain respects.