Figure 1.
Nissl-stained transverse sections through the IC of cat (A) and rat (B) with the major subdivisions labeled. Italicized labels (LC and VLN) indicate the new terminology introduced in this manuscript. The cat LC contains the two layers of the lateral nucleus (LN) plus the deeper ventrolateral nucleus (VLN). In rats, the LC corresponds to the lateral portion of external cortex (ECIC) in the classic parcellation (Faye-Lund and Osen, 1985, modified by Saldañ and Merchaán, 1992).