The organization of the posterior ventral cochlear nucleus in the rat

摘要: The ventral cochlear nucleus was examined in 31 rats' brains prepared according to the protargol method of Bodian. following regions were delimited on basis synaptic, cellular and axonal criteria. Region II, which occupies central part nucleus, consists principally cells (type g)which receive modified bulbs Held from acoustic nerve send large axons trapezoid body. graded size, smallest (high frequency) being located dorsally larges (low ventrally. Associated with region II are b) nucleus. These boutons very body. Region IV is posterior composed multipolar k). dendrites these specifically organized respect fibers nerve. Synaptic endings, descending branch nerve, consist cell body dendrites. compose stria Held. Region V appeared have only intrinsic connections. All received synaptic endings addition those arose