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Efferent connections of the dorsomedial thalamic nuclei of the domestic chick ( Gallus domesticus )
Author(s) -
Montagnese Catherine M.,
Mezey Szilvia E.,
Csillag András
Publication year - 2003
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.10612
Subject(s) - neuroscience , biology , nucleus accumbens , thalamus , anatomy , zona incerta , ventral tegmental area , lateral hypothalamus , efferent , tegmentum , locus coeruleus , forebrain , ventral pallidum , midbrain , nucleus , reticular formation , dorsal raphe nucleus , periaqueductal gray , septal nuclei , paramedian pontine reticular formation , hypothalamus , basal ganglia , central nervous system , globus pallidus , dopamine , dopaminergic , afferent , serotonergic , biochemistry , receptor , serotonin
Small iontophoretic injections of the anterograde tracer Phaseolus vulgaris leucoagglutinin were placed in the thalamic anterior dorsomedial nucleus (DMA) of domestic chicks. The projections of the DMA covered the rostrobasal forebrain, ventral paleostriatum, nucleus accumbens, septal nuclei, Wulst, hyperstriatum ventrale, neostriatal areas, archistriatal subdivisions, dorsolateral corticoid area, numerous hypothalamic nuclei, and dorsal thalamic nuclei. The rostral DMA projects preferentially on the hypothalamus, whereas the caudal part is connected mainly to the dorsal thalamus. The DMA is also connected to the periaqueductal gray, deep tectum opticum, intercollicular nucleus, ventral tegmental area, substantia nigra, locus coeruleus, dorsal lateral mesencephalic nucleus, lateral reticular formation, nucleus papillioformis, and vestibular and cranial nerve nuclei. This pattern of connectivity is likely to reflect an important role of the avian DMA in the regulation of attention and arousal, memory formation, fear responses, affective components of pain, and hormonally mediated behaviors. J. Comp. Neurol. 459:301–326, 2003. © 2003 Wiley‐Liss, Inc.