Projections to eye movement-related pause neuron region in cat using HRP.

The origins of the afferent connections to the eye movement-related pause neurons in cats were examined using retrograde transport of horseradish peroxidase with wheat germ agglutinin. The major input sources to the pause neuron region were nucleus prepositus hypoglossi, medial vestibular nucleus, gigantocellular reticular nucleus, parvocellular reticular nucleus, nucleus reticularis tegmentis pontis, nucleus reticularis pontis caudalis, nucleus reticularis pontis oralis, and superior colliculus. Less heavily labeled sources included the lateral and descending vestibular nuclei, the locus ceruleus, and the dorsal raphe.