Eine neue morphologische Deutung des Vogelgehirns auf Grund neuer Forschungsergebnisse

Stingelin, Werner

doi:10.1007/bf02170537

Cited by 4 publications

(1 citation statement)

References 4 publications

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“…During the first half of the century, the DVR was homologized primarily to parts of the mammalian striatum (Elliot Smith, 1919;Johnston, 1923, Ariëns Kappers et al, 1936. More recently, the DVR has been homologized to part of mammalian isocortex, partly because Kä llén's studies indicated a pallial derivation of the DVR (Stingelin, 1956), and partly because new connectional studies revealed several thalamorecipient sensory areas within the DVR (Karten, 1969). This isocortical DVR hypothesis has been challenged, however, on the basis of connectional data (Bruce and Neary, 1995) and because the available developmental data indicated that the DVR develops as a thickening of the most lateral aspect of the pallial wall, whereas mammalian isocortex apparently develops dorsal to the adjacent piriform cortex (see Striedter, 1997b).…”

Section: Evolution Of the Telencephalonmentioning

confidence: 96%

Distribution of radial glia in the developing telencephalon of chicks

Striedter

Beydler

1997

J. Comp. Neurol.

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Radial glia are known to have a sparse and uneven distribution in the telencephalon of adult birds. The present study utilizes antibodies against vimentin to reveal a more extensive, and more clearly radial, set of radial glia in the chicken telencephalon during the first half of embryogenesis. This initially extensive radial glial fiber system becomes distorted and reduced between 10 and 14 days of incubation. This reduction coincides with the cytoarchitectural differentiation of the telencephalon into its major adult subdivisions. Because developing neurons tend to migrate along radial glial fibers in both birds and mammals, a topological projection of these major subdivisions onto the embryonic ventricular zone along the radial glial fibers suggests hypotheses about lineage relationships that can be tested by subsequent experimental methods. This analysis suggests that the major components of the avian dorsal ventricular ridge, i.e., the ventral hyperstriatum, the neostriatum with its various subdivisions, part of the archistriatum, and probably also the piriform cortex, all derive from overlapping portions of the lateral pallial ventricular zone. Staining with antibodies against neurofilament suggests that this developmental parcellation of the lateral pallial complex is associated with the development of neuronal fiber systems.

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Section: Evolution Of the Telencephalonmentioning

confidence: 96%

Distribution of radial glia in the developing telencephalon of chicks

Striedter

Beydler

1997

J. Comp. Neurol.

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The organization and projections of the paleostriatal complex in the pigeon (columba livia)

Karten

Dubbeldam

1973

J of Comparative Neurology

277

149

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The paleostriatal complex (PC) of the pigeon lies in the basolateral wall of telencephalon, and consists of three major subdivisions: the paleostriatum augmentatum (PA), paleostriatum primitivum (PP), and nucleus intrapeduncularis (INP). The lobus parolfactorius (LPO) lies on the medial aspect of PA and has often been considered to be part of PA. The present study of afferent and efferent connections of the paleostriatal complex supports earlier Previous suggestions that the PC is directly comparable to the basal ganglia of mammalia. High concentrations of acetylcholinesterase were found in the PA, LPO and INP. Intense yellowish green fluorescence, probably dopamine, was confined to the PA and LPO.Stereotaxic lesions were placed in either the dorsal ventricular ridge structures above the PC ( n e e and hyperstriaturn), PA, LPO or PP-INP, and animals sacrificed from one to six days postoperatively. The brains were stained with the Fink-Heimer methods for the demonstration of degenerating axons and terminals. The region of the neo-and hyperstriatum was found to project upon the PA, in a seemingly topographic manner. PA was found to project topographically upon the PP and INP. In contrast, the LPO contributed to the medial forebrain bundle, terminating in the rostral lateral hypothalamus. LPO does not appear to project to the PP or INP.Lesions of PP-INP resulted in massive degeneration of a descending tract, the ansa lenticularis. Terminal degeneration was found in the anterior and posterior nuclei of the ansa lenticularis of the ventral diencephalon, nucleus dorsalis intermedius posterior and nucleus spiriformis lateralis of the dorsal thalamus, and the nucleus tegmenti pedunculopontinus pars compacta et disseminata of the isthmic tegmentum. In these several features of histochemical and hodological organization the PC alone appears similar to the caudate-putamen and globus pallidus complex of mammalian brains.More specifically, the PA resembles the caudate-putamen, whereas PP and INP resemble the external and internal divisions of the globus pallidus, respectively. Similarities and differences between avian and mammalian brains, and the relationship of the present study of the PC and previous studies of the dorsal ventricular ridge structures are discussed (Karten, '69; Nauta and Karten, '70).

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Histochimie du neuropile du poulet pendant l'ontog�n�se ? hyperstri� vrai

Palladini

Alfei

1968

Histochemie

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Eine neue morphologische Deutung des Vogelgehirns auf Grund neuer Forschungsergebnisse

Cited by 4 publications

References 4 publications

Distribution of radial glia in the developing telencephalon of chicks

Distribution of radial glia in the developing telencephalon of chicks

The organization and projections of the paleostriatal complex in the pigeon (columba livia)

Histochimie du neuropile du poulet pendant l'ontog�n�se ? hyperstri� vrai

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