22 research outputs found
Distribution of the <FONT FACE=Symbol>a</font>2, <FONT FACE=Symbol>a</font>3, and <FONT FACE=Symbol>a</font>5 nicotinic acetylcholine receptor subunits in the chick brain
Neurotransmitter regulation of neural development: acetylcholine and nicotinic receptors
THALAMIC ORIGIN OF NEUROPEPTIDE-Y INNERVATION OF THE ACCESSORY OPTIC NUCLEUS OF THE PIGEON (COLUMBA-LIVIA)
THE RAT ACCESSORY OPTIC-SYSTEM - EFFECTS OF CORTICAL-LESIONS ON THE DIRECTIONAL SELECTIVITY OF UNITS WITHIN THE MEDIAL TERMINAL NUCLEUS
Classical tone-shock conditioning induces Zenk expression in the pigeon (Columba livia) hippocampus
The hippocampus is involved in fear conditioning, although the molecular events underlying this function are still under investigation. The authors analyzed the expression of the Zenk proto-oncogene product within the pigeon (Columba livia) hippocampus after training with a classical aversive conditioning protocol using tone-shock associations. Control groups were trained with shock or tone alone or were only exposed to the experimental chamber and manipulated. Experimental pigeons showed significant increases of Zenk expression in the ventromedial region of the hippocampus, whereas both the experimental and shock groups had increased Zenk expression in the dorsal region. The expression of Zenk in specific neuronal populations within the pigeon hippocampus may be indicative of plasticity-associated aversive classical conditioning.120235336