Results 151 to 160 of about 3,585 (189)
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Interpeducular nucleus afferents in the rat
Brain Research, 1980Afferents to the interpeduncular nucleus (IPN) of the rat were studied with the horseradish peroxidase (HRP) retrograde transport method. HRP was deposited microelectrophoretically in the IPN of adult rats. Major projections to the IPN originate in the medial habenular nucleus, the region surrounding the dorsal tegmental nucleus (accessory dorsal ...
E R, Marchand, J N, Riley, R Y, Moore
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The interpeduncular nucleus (ITP)
Cell and Tissue Research, 1977Special types of cells of the interpeduncular nucleus (ITP) in the fog, Rana esculenta, are described after three typed of fixation: osmium tetroxide, aldehydes and potassium permanganate. Large granules with a sub-unit structure occurring together with bundles of filaments and elongated mitochondria are illustrated in the processes of cells, the ...
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Development of the interpeduncular nucleus in the midbrain of rhesus monkey and human
Anatomy and Embryology, 1978The development of the interpeduncular nucleus (IPN) in primates was studied in rhesus monkey with 3H-thymidine autoradiographic, Nissl and Golgi methods and in humans in histological preparations from embryos and fetuses of different ages. Autoradiographic analysis demonstrated that the neurons of the monkey IPN underwent their final cell division ...
N J, Lenn, N, Halfon, P, Rakic
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Actions of cholinergic drugs on cells in the interpeduncular nucleus
Experimental Neurology, 1984The muscarinic versus nicotinic effects of acetylcholine (ACh) on the activity of cells in the interpeduncular nucleus (IPN) of guinea pig brain slices were investigated using electrophysiologic techniques. Nicotinic and muscarinic drugs acted postsynaptically to increase the firing rate of cells in the IPN.
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Lesion-induced catecholaminergic sprouting in the interpeduncular nucleus
Neurochemical Research, 1984This work examined the capacity of intact catecholaminergic axon terminals to sprout in the partially deafferented interpeduncular nucleus (IPN). The results show that norepinephrine and dopamine levels were markedly increased in the IPN 6 weeks after bilateral habenula (Hb) lesions.
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Journal of Comparative Neurology, 1981
AbstractThe HRP tracing method was employed to investigate the organization and afferent connections of the interpeduncular nucleus (IPN) in the rat. To study the topographical features of the different projections, a method was devised for obtaining HRP placements of limited size in different areas of the IPN.The main afferent connection of the IPN is
A, Contestabile, B A, Flumerfelt
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AbstractThe HRP tracing method was employed to investigate the organization and afferent connections of the interpeduncular nucleus (IPN) in the rat. To study the topographical features of the different projections, a method was devised for obtaining HRP placements of limited size in different areas of the IPN.The main afferent connection of the IPN is
A, Contestabile, B A, Flumerfelt
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Effect of neonatal deafferentation on synaptogenesis in the rat interpeduncular nucleus
Journal of Comparative Neurology, 1978AbstractChanges in the normal synaptogenetic pattern of the interpeduncular nucleus (IPN) were induced by destruction of one or both habenular nuclei in neonatal rats. The S synapses, the principal habenulointerpeduncular (H‐IPN) afferents, were reduced in number and delayed in time of appearance by unilateral lesions. They were eliminated by bilateral
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Electron microscopic demonstration of caudal afferents to the rat interpeduncular nucleus
Neuroscience, 1980Abstract Analysis of the synaptology of the rat interpeduncular nucleus is of interest, amongst other reasons, because of morphological and biochemical evidence for synaptic sprouting following lesions of the habenular nucleus. Thus far only the synapses arising from the habenulointerpeduncular afferent axons have been identified by electron ...
N J, Lenn, V, Wong
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Left-right pairing at the crest synapses of rat interpeduncular nucleus
Neuroscience, 1983Synaptic terminals of the habenulo-interpeduncular axons in rat interpeduncular nucleus are demonstrated by electron-microscopic autoradiography following [3H]leucine injection into the habenula. The endings are of two types, S and crest synapses. Previous descriptions of the S synapses based on indirect identification were confirmed.
N J, Lenn, V, Wong, G S, Hamill
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