[Afferent connections of the ventral section of the magnocellular part of the nucleus ruber of the cat].

Localization of retrograde-labelled brain neurons--sources of projections to the ventral magnocellular part of the red nucleus was studied in adult cat by means of microiontophoretic injections of horseradish peroxidase. The projections from many cortical, thalamic and hypothalamic structures, from the head of nucleus caudatus, septum, globus pallidus, anterior commissure nucleus, nucleus amygdalaris centralis, field of Forel, zona incerta and a number of the brainstem structures have been established. Projections from a number of other brain structures to the red nucleus have been confirmed. Trajectories of labelled fibre system projecting to the red nucleus are described.