Connections of the corticomedial amygdala in the golden hamster. II. Efferents of the ''olfactory amygdala''

Journal Article · Fri Mar 20 04:00:00 EST 1981 · J. Comp. Neurol.; (United States)

DOI:https://doi.org/10.1002/cne.901970108· OSTI ID:5577726

Kevetter, G A; Winans, S S

The anterior cortical (C1) and posterolateral cortical (C2) nuclei of the amygdala are designated the ''olfactory amygdala'' because they each receive direct projections from the main olfactory bulb. The efferents of these nuclei were traced after stereotaxic placement of 1-5 muCi tritiated proline in the corticomedial amygdala of the male golden hamsters. Following survival times of 12, 24, or 48 hours, 20 micron frozen sections of the brains were processed for light microscopic autoradiography. Efferents from C2 terminate in layers II and III of the olfactory tubercle and in layer Ib of pars ventralis and pars medialis of the anterior olfactory nucleus. Fibers from this nucleus also project to layers I and II of the infralimbic cortex and to the molecular layer of the agranular insular cortex. More posteriorly, fibers from C2 terminate in layer I of the dorsolateral entorhinal cortex, and in the endopiriform nucleus. From C1, efferent fibers travel in the stria terminalis and terminate in the precommissural bed nucleus of the stria terminalis and in the mediobasal hypothalamus. Efferents from C1 also innervate the molecular layer of C2, the amygdalo-hippocampal area, and the adjacent piriform cortex. Neurons in both C1 and C2 project to the molecular layer of the medial amygdaloid nucleus and the posteromedial cortical nucleus of the amygdala, the plexiform layer of the ventral subiculum, and the molecular layer of the lateral entorhinal cortex.

• OSTI ID: 5577726
• Journal Information: J. Comp. Neurol.; (United States), Journal Name: J. Comp. Neurol.; (United States) Vol. 197:1; ISSN JCNEA
• Country of Publication: United States
• Language: English

Related Subjects

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551001 -- Physiological Systems-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
AMINES
AMINO ACIDS
ANATOMY
ANIMALS
AUTORADIOGRAPHY
AZOLES
BODY
BRAIN
CARBOXYLIC ACIDS
CENTRAL NERVOUS SYSTEM
CEREBRAL CORTEX
CEREBRUM
HAMSTERS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
LABELLED COMPOUNDS
MAMMALS
MORPHOLOGY
NERVOUS SYSTEM
OLFACTORY BULBS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANS
PROLINE
PYRROLES
PYRROLIDINES
RODENTS
TRITIUM COMPOUNDS
VERTEBRATES