| Abstract: | InEmys orbicularis turtles andOphisaurus apodus lizards GABA-immunoreactive (GABA-I) components (cell bodies and neuropiles) of all ventral and dorsal amygdaloid complex (AC) structures were examined as phylogenetically earlier or later using immunohistochemical methods. Maximum numbers of these structures are found in lateral regions of the ventral AC section, while the least are found in ventral, central, and medial portions. Furthermore, in lizards, a specialized laminar distribution of the GABA-I components is observed in n. sphaericus structures. In both turtles and lizards, against a background of immunopositive neuropile of moderate density, GABA-I neurons are detected in dorsal section structures. Results suggest that GABAergic innervation of the AC is subject to significant variation in conjunction with taxonomic, ecological, and other factors.I. M. Sechenov Institute of Evoutionary Physiology and Biochemistry, Russian Academy of Science, Saint Petersburg. Translated from Neirofiziologiya, Vol. 24, No. 1, pp. 68–77, January–February, 1992. |
